Slash menu throws "Attempting to update uninitialized suggestions menu" after toggling editable

Version:
@blocknote/core@0.49.0

Repro

1. Render a BlockNoteEditor whose editable prop is toggled from a parent (e.g. switching between view and edit mode).
2. DevTools → Performance → CPU: 6x slowdown (low-end devices reproduce naturally).
3. Toggle the editor from non-editable to editable.
4. Immediately type / to open the slash/suggestion menu.

Throws:

  Error: Attempting to update uninitialized suggestions menu                                                                         
      at emitUpdate (SuggestionMenu.ts:35)                  
      at SuggestionMenuView.update (SuggestionMenu.ts:90)                                                                            
      at ... prosemirror-view dispatch 

What did you expect to happen?

No errors

Steps to reproduce

• Render a BlockNoteEditor whose editable prop is controlled by parent React state (we toggle between view/edit modes).
  -Open DevTools → Performance → set CPU to 6× slowdown (this makes the bug deterministic; in production it occurs on real users without throttling, presumably on slower devices).
• Toggle the editor from non-editable → editable
• Immediately type / to open the suggestion menu.
• Observe the thrown error in the console

BlockNote version

@blocknote/core@0.49.0

Environment

Reported in production on Chrome 147 / Windows 10/11 (real user). Reproduced locally on Chrome (latest) / macOS with React 18 and CPU throttling at 6×.

Additional context

Production stack trace (sourcemapped):

  Error: Attempting to update uninitialized suggestions menu
      at emitUpdate (@blocknote/core/src/extensions/SuggestionMenu/SuggestionMenu.ts:35:18)
      at SuggestionMenuView.update (@blocknote/core/src/extensions/SuggestionMenu/SuggestionMenu.ts:90:11)
      at pluginView.update (prosemirror-view/dist/index.js:5580:31)
      at anchorInRightPlace (prosemirror-view/dist/index.js:5526:13)
      at updateState (prosemirror-view/dist/index.js:5454:13)
      at Editor.emit (@tiptap/core/src/Editor.ts:646:14)
      at dispatch (prosemirror-view/dist/index.js:5829:28)
      at callback (@blocknote/core/src/editor/managers/StateManager.ts:142:29)
      at callback (@blocknote/core/src/editor/BlockNoteEditor.ts:707:30)
      at closeMenu (@blocknote/core/src/extensions/SuggestionMenu/SuggestionMenu.ts:117:16)

Contribution

• I'd be interested in contributing a fix for this issue

Sponsor

• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

Start in @blocknote/core/src/extensions/SuggestionMenu/SuggestionMenu.ts, especially emitUpdate, SuggestionMenuView.update, and closeMenu, then reproduce the controlled editable toggle with CPU throttling. Trace the update sequence after switching to editable and typing /. Done means the slash menu opens without the uninitialized suggestions menu error.