diff --git a/theatre/core/src/CoreBundle.ts b/theatre/core/src/CoreBundle.ts
index 8b0e11e..6b34b6a 100644
--- a/theatre/core/src/CoreBundle.ts
+++ b/theatre/core/src/CoreBundle.ts
@@ -1,8 +1,10 @@
-import type Studio from '@theatre/studio/Studio'
+import type {Studio} from '@theatre/studio/Studio'
 import projectsSingleton from './projects/projectsSingleton'
+import {privateAPI} from './privateAPIs'
 
 export type CoreBits = {
   projectsP: typeof projectsSingleton.atom.pointer.projects
+  privateAPI: typeof privateAPI
 }
 
 export default class CoreBundle {
@@ -24,6 +26,7 @@ export default class CoreBundle {
     this._studio = studio
     const bits: CoreBits = {
       projectsP: projectsSingleton.atom.pointer.projects,
+      privateAPI: privateAPI,
     }
 
     callback(bits)
diff --git a/theatre/shared/src/privateAPIs.ts b/theatre/core/src/privateAPIs.ts
similarity index 84%
rename from theatre/shared/src/privateAPIs.ts
rename to theatre/core/src/privateAPIs.ts
index b486cf1..50e4ec2 100644
--- a/theatre/shared/src/privateAPIs.ts
+++ b/theatre/core/src/privateAPIs.ts
@@ -6,8 +6,6 @@ import type SheetObject from '@theatre/core/sheetObjects/SheetObject'
 import type {ISheetObject} from '@theatre/core/sheetObjects/TheatreSheetObject'
 import type Sheet from '@theatre/core/sheets/Sheet'
 import type {ISheet} from '@theatre/core/sheets/TheatreSheet'
-import type Studio from '@theatre/studio/Studio'
-import type {IStudio} from '@theatre/studio/TheatreStudio'
 import type {$IntentionalAny} from '@theatre/shared/utils/types'
 
 const publicAPIToPrivateAPIMap = new WeakMap()
@@ -16,7 +14,6 @@ export function privateAPI(pub: IProject): Project
 export function privateAPI(pub: ISheet): Sheet
 export function privateAPI(pub: ISheetObject<$IntentionalAny>): SheetObject
 export function privateAPI(pub: ISequence): Sequence
-export function privateAPI(pub: IStudio | IStudio['ui']): Studio
 export function privateAPI(pub: {}): unknown {
   return publicAPIToPrivateAPIMap.get(pub)
 }
@@ -28,7 +25,6 @@ export function setPrivateAPI(
   pub: ISheetObject<$IntentionalAny>,
   priv: SheetObject,
 ): void
-export function setPrivateAPI(pub: IStudio | IStudio['ui'], priv: Studio): void
 export function setPrivateAPI(pub: {}, priv: {}): void {
   publicAPIToPrivateAPIMap.set(pub, priv)
 }
diff --git a/theatre/core/src/projects/TheatreProject.ts b/theatre/core/src/projects/TheatreProject.ts
index c448b51..967eb9d 100644
--- a/theatre/core/src/projects/TheatreProject.ts
+++ b/theatre/core/src/projects/TheatreProject.ts
@@ -1,4 +1,4 @@
-import {privateAPI, setPrivateAPI} from '@theatre/shared/privateAPIs'
+import {privateAPI, setPrivateAPI} from '@theatre/core/privateAPIs'
 import Project from '@theatre/core/projects/Project'
 import type {ISheet} from '@theatre/core/sheets/TheatreSheet'
 import type {ProjectAddress} from '@theatre/shared/utils/addresses'
diff --git a/theatre/core/src/sequences/TheatreSequence.ts b/theatre/core/src/sequences/TheatreSequence.ts
index a54e25a..4ac22ae 100644
--- a/theatre/core/src/sequences/TheatreSequence.ts
+++ b/theatre/core/src/sequences/TheatreSequence.ts
@@ -1,5 +1,5 @@
 import logger from '@theatre/shared/logger'
-import {privateAPI, setPrivateAPI} from '@theatre/shared/privateAPIs'
+import {privateAPI, setPrivateAPI} from '@theatre/core/privateAPIs'
 import {defer} from '@theatre/shared/utils/defer'
 import type Sequence from './Sequence'
 import type {IPlaybackDirection, IPlaybackRange} from './Sequence'
diff --git a/theatre/core/src/sheetObjects/TheatreSheetObject.ts b/theatre/core/src/sheetObjects/TheatreSheetObject.ts
index bec4fb6..76e30b2 100644
--- a/theatre/core/src/sheetObjects/TheatreSheetObject.ts
+++ b/theatre/core/src/sheetObjects/TheatreSheetObject.ts
@@ -1,4 +1,4 @@
-import {privateAPI, setPrivateAPI} from '@theatre/shared/privateAPIs'
+import {privateAPI, setPrivateAPI} from '@theatre/core/privateAPIs'
 import type {IProject} from '@theatre/core/projects/TheatreProject'
 import coreTicker from '@theatre/core/coreTicker'
 import type {ISheet} from '@theatre/core/sheets/TheatreSheet'
diff --git a/theatre/core/src/sheets/TheatreSheet.ts b/theatre/core/src/sheets/TheatreSheet.ts
index ac82b9c..4608276 100644
--- a/theatre/core/src/sheets/TheatreSheet.ts
+++ b/theatre/core/src/sheets/TheatreSheet.ts
@@ -1,4 +1,4 @@
-import {privateAPI, setPrivateAPI} from '@theatre/shared/privateAPIs'
+import {privateAPI, setPrivateAPI} from '@theatre/core/privateAPIs'
 import type {IProject} from '@theatre/core/projects/TheatreProject'
 import type TheatreSequence from '@theatre/core/sequences/TheatreSequence'
 import type {ISequence} from '@theatre/core/sequences/TheatreSequence'
diff --git a/theatre/shared/src/testUtils.ts b/theatre/shared/src/testUtils.ts
index 0a0490e..1a5a663 100644
--- a/theatre/shared/src/testUtils.ts
+++ b/theatre/shared/src/testUtils.ts
@@ -1,7 +1,7 @@
 /* eslint-disable no-restricted-syntax */
 import '@theatre/studio'
 import {getProject} from '@theatre/core'
-import {privateAPI} from '@theatre/shared/privateAPIs'
+import {privateAPI} from '@theatre/core/privateAPIs'
 import type {ProjectState_Historic} from '@theatre/core/projects/store/storeTypes'
 import type {SheetState_Historic} from '@theatre/core/projects/store/types/SheetState_Historic'
 import * as t from '@theatre/shared/propTypes'
diff --git a/theatre/shared/src/utils/reactDataverse.ts b/theatre/shared/src/utils/reactDataverse.ts
index 362bb59..b1b3c57 100644
--- a/theatre/shared/src/utils/reactDataverse.ts
+++ b/theatre/shared/src/utils/reactDataverse.ts
@@ -160,7 +160,7 @@ function useDerivation<T>(der: IDerivation<T>, debugLabel?: string): T {
   }, [der])
 
   useLayoutEffect(() => {
-    return () => {
+    return function onUnmount() {
       refs.current.unmounted = true
       removeFromQueue(refs.current.queueItem)
     }
diff --git a/theatre/studio/src/Scrub.ts b/theatre/studio/src/Scrub.ts
index a6480ac..49a4ce8 100644
--- a/theatre/studio/src/Scrub.ts
+++ b/theatre/studio/src/Scrub.ts
@@ -2,7 +2,7 @@ import forEachDeep from '@theatre/shared/utils/forEachDeep'
 import type {$FixMe} from '@theatre/shared/utils/types'
 import type {Pointer} from '@theatre/dataverse'
 import {getPointerParts} from '@theatre/dataverse'
-import type Studio from './Studio'
+import type {Studio} from './Studio'
 import type {CommitOrDiscard} from './StudioStore/StudioStore'
 import logger from '@theatre/shared/logger'
 import {isSheetObject} from '@theatre/shared/instanceTypes'
diff --git a/theatre/studio/src/Studio.ts b/theatre/studio/src/Studio.ts
index a851088..e73b527 100644
--- a/theatre/studio/src/Studio.ts
+++ b/theatre/studio/src/Studio.ts
@@ -13,8 +13,10 @@ import type {IStudio} from './TheatreStudio'
 import TheatreStudio from './TheatreStudio'
 import {nanoid} from 'nanoid/non-secure'
 import type Project from '@theatre/core/projects/Project'
+import type {CoreBits} from '@theatre/core/CoreBundle'
+import type {privateAPI} from '@theatre/core/privateAPIs'
 
-export default class Studio {
+export class Studio {
   readonly atomP: Pointer<FullStudioState>
   readonly ui!: UI
   readonly publicApi: IStudio
@@ -26,6 +28,7 @@ export default class Studio {
     this._projectsProxy.pointer
 
   private readonly _store = new StudioStore()
+  private _corePrivateApi: typeof privateAPI | undefined
 
   constructor() {
     this.address = {studioId: nanoid(10)}
@@ -59,7 +62,12 @@ export default class Studio {
     attachToProjects(projectsD.getValue())
   }
 
-  setProjectsP(projectsP: Pointer<Record<string, Project>>) {
+  setCoreBits(coreBits: CoreBits) {
+    this._corePrivateApi = coreBits.privateAPI
+    this._setProjectsP(coreBits.projectsP)
+  }
+
+  private _setProjectsP(projectsP: Pointer<Record<string, Project>>) {
     this._projectsProxy.setPointer(projectsP)
   }
 
@@ -78,4 +86,8 @@ export default class Studio {
   __dev_startHistoryFromScratch(newHistoricPart: StudioHistoricState) {
     return this._store.__dev_startHistoryFromScratch(newHistoricPart)
   }
+
+  get corePrivateAPI() {
+    return this._corePrivateApi
+  }
 }
diff --git a/theatre/studio/src/StudioBundle.ts b/theatre/studio/src/StudioBundle.ts
index dc709ff..5bb8b67 100644
--- a/theatre/studio/src/StudioBundle.ts
+++ b/theatre/studio/src/StudioBundle.ts
@@ -1,6 +1,6 @@
 import type CoreBundle from '@theatre/core/CoreBundle'
 import type {CoreBits} from '@theatre/core/CoreBundle'
-import type Studio from './Studio'
+import type {Studio} from './Studio'
 
 export default class StudioBundle {
   private _coreBundle: undefined | CoreBundle
@@ -22,6 +22,6 @@ export default class StudioBundle {
       coreBits = bits
     })
 
-    this._studio.setProjectsP(coreBits.projectsP)
+    this._studio.setCoreBits(coreBits)
   }
 }
diff --git a/theatre/studio/src/TheatreStudio.ts b/theatre/studio/src/TheatreStudio.ts
index ab46967..3e331af 100644
--- a/theatre/studio/src/TheatreStudio.ts
+++ b/theatre/studio/src/TheatreStudio.ts
@@ -2,15 +2,15 @@ import type {ISheetObject} from '@theatre/core'
 import studioTicker from '@theatre/studio/studioTicker'
 import type {IDerivation, Pointer} from '@theatre/dataverse'
 import {prism} from '@theatre/dataverse'
-import {privateAPI, setPrivateAPI} from '@theatre/shared/privateAPIs'
 import SimpleCache from '@theatre/shared/utils/SimpleCache'
 import type {VoidFn} from '@theatre/shared/utils/types'
 import type {IScrub} from '@theatre/studio/Scrub'
 
-import type Studio from '@theatre/studio/Studio'
+import type {Studio} from '@theatre/studio/Studio'
 import {isSheetObjectPublicAPI} from '@theatre/shared/instanceTypes'
 import {getOutlineSelection} from './selectors'
 import type SheetObject from '@theatre/core/sheetObjects/SheetObject'
+import getStudio from './getStudio'
 
 export interface ITransactionAPI {
   set<V>(pointer: Pointer<V>, value: V): void
@@ -39,19 +39,19 @@ export interface IStudio {
 export default class TheatreStudio implements IStudio {
   readonly ui = {
     show() {
-      privateAPI(this).ui.show()
+      getStudio().ui.show()
     },
 
     hide() {
-      privateAPI(this).ui.hide()
+      getStudio().ui.hide()
     },
 
     get showing(): boolean {
-      return privateAPI(this).ui._showing
+      return getStudio().ui._showing
     },
 
     restore() {
-      privateAPI(this).ui.restore()
+      getStudio().ui.restore()
     },
   }
 
@@ -60,13 +60,10 @@ export default class TheatreStudio implements IStudio {
   /**
    * @internal
    */
-  constructor(internals: Studio) {
-    setPrivateAPI(this, internals)
-    setPrivateAPI(this.ui, internals)
-  }
+  constructor(internals: Studio) {}
 
   transaction(fn: (api: ITransactionAPI) => void): void {
-    return privateAPI(this).transaction(({set, unset}) => {
+    return getStudio().transaction(({set, unset}) => {
       return fn({set, unset})
     })
   }
@@ -88,9 +85,9 @@ export default class TheatreStudio implements IStudio {
   __experimental_setSelection(selection: Array<ISheetObject>): void {
     const sanitizedSelection = [...selection]
       .filter((s) => isSheetObjectPublicAPI(s))
-      .map((s) => privateAPI(s))
+      .map((s) => getStudio().corePrivateAPI!(s))
 
-    privateAPI(this).transaction(({stateEditors}) => {
+    getStudio().transaction(({stateEditors}) => {
       stateEditors.studio.historic.panels.outline.selection.set(
         sanitizedSelection,
       )
@@ -106,6 +103,6 @@ export default class TheatreStudio implements IStudio {
   }
 
   scrub(): IScrub {
-    return privateAPI(this).scrub()
+    return getStudio().scrub()
   }
 }
diff --git a/theatre/studio/src/index.ts b/theatre/studio/src/index.ts
index 78e78ac..5b8f648 100644
--- a/theatre/studio/src/index.ts
+++ b/theatre/studio/src/index.ts
@@ -1,5 +1,5 @@
 import {setStudio} from '@theatre/studio/getStudio'
-import Studio from '@theatre/studio/Studio'
+import {Studio} from '@theatre/studio/Studio'
 export type {IScrub} from '@theatre/studio/Scrub'
 export type {IStudio} from '@theatre/studio/TheatreStudio'
 import * as globalVariableNames from '@theatre/shared/globalVariableNames'
@@ -8,6 +8,7 @@ import StudioBundle from './StudioBundle'
 import type CoreBundle from '@theatre/core/CoreBundle'
 
 const studioPrivateAPI = new Studio()
+setStudio(studioPrivateAPI)
 export const studio = studioPrivateAPI.publicApi
 export default studio
 
@@ -15,8 +16,6 @@ if (process.env.NODE_ENV !== 'test') {
   studio.ui.show()
 }
 
-setStudio(studioPrivateAPI)
-
 registerStudioBundle()
 
 function registerStudioBundle() {