posAtDOM error when editor view remounts (locale/editable change)

[yannishin]

Describe the bug

When the editor view is remounted (e.g., changing collaboration or ``localeoreditable` props), a console error occurs if the mouse cursor is positioned over the editor area:

Uncaught Error: [tiptap error]: The editor view is not available. Cannot access view['posAtDOM']. The editor may not be mounted yet.
at Object.getLinkAtElement (TrailingNode-*.js)
at HTMLDivElement.d (blocknote-react.js)

The error is thrown from getLinkAtElement function which is called on mouse events without checking if the editor view is available.

Note: The editor functionality works correctly - only the console error appears.

To Reproduce

1. Create a BlockNote editor
2. Position your mouse cursor over the editor content area
3. Change the locale prop (e.g., 'en' → 'ko') or toggle editable (true → false → true)
4. Observe the console error

This does NOT happen when changing the theme prop (which doesn't trigger view remount).

Misc

• Node version: 22.x
• Package manager: pnpm 10.x
• Browser: Chrome : 143.0.7499.170
• BlockNote version: 0.45.0 (also tested on 0.43.0, 0.44.0)
• Works fine on 0.42.3

This issue started occurring after v0.43.0 ("Extensions, UI redesign" #2143).

Suggested fix:

Add a view availability check before accessing posAtDOM:

// In getLinkAtElement or the mouse event handler
if (!editor._tiptapEditor?.view) return null;

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

[YousefED]

Thanks, we'll look into this. As which organization are you sponsoring?

[yannishin]

Thanks, we'll look into this. As which organization are you sponsoring?
naonlab, Business Plan

[YousefED]

Thanks. I tried to reproduce it here, but without success: https://stackblitz.com/edit/github-jetdkl9c?file=src%2FApp.tsx

Can you edit the sandbox to reproduce the issue?

[guizmooi]

Hi, I reproduced the issue here. - https://stackblitz.com/edit/github-jetdkl9c-snthlwoa?file=src%2FApp.tsx,src%2FCustomBlockNoteView.tsx,src%2Ftypes.ts

After typing something in the first editor and then moving the mouse cursor to the editor below, an error appears in the console (see image below).

[yannishin]

@guizmooi Thank you for the reproduction!
I can confirm this error also occurs when changing collaboration or locale props, not just editable. Any prop change that triggers editor view remount causes the same issue when the mouse cursor is over the editor area.

[YousefED]

Thanks for the reproduction. We've worked on a fix which we expect to release later this week (see #2335 )