`floatingUIOptions.useFloatingOptions` completely overwrites internal settings instead of merging

[ysds]

Describe the bug

When passing floatingUIOptions={{ useFloatingOptions: { strategy: "fixed" } }} to components like FormattingToolbarController, SideMenuController, or LinkToolbarController, the internal useFloatingOptions settings (including open, onOpenChange, placement, and middleware) are completely overwritten instead of being merged. This causes the toolbar/menu to not appear at all.

To Reproduce

1. Use a BlockNoteView inside a scrollable container
2. Pass floatingUIOptions with useFloatingOptions.strategy: "fixed" to any controller:

<FormattingToolbarController
  floatingUIOptions={{
    useFloatingOptions: { strategy: "fixed" },
  }}
  formattingToolbar={() => <CustomFormattingToolbar />}
/>

3. The formatting toolbar does not appear when selecting text

Expected behavior

The strategy: "fixed" option should be merged with the internal useFloatingOptions settings, preserving open, onOpenChange, placement, and middleware while adding/overriding only the strategy property.

Root cause

Looking at the source code in FormattingToolbarController:

const c = useMemo(
  () => ({
    useFloatingOptions: {
      open: o,
      onOpenChange: (a, u, d) => { /* ... */ },
      placement: i,
      middleware: [offset(10), shift(), flip()]
    },
    elementProps: { /* ... */ },
    ...e.floatingUIOptions  // <-- This spreads at the top level
  }),
  [/* ... */]
);

The spread ...e.floatingUIOptions replaces the entire useFloatingOptions object if provided, rather than merging nested properties.

Misc

• Node version: 24.12.0
• Package manager: npm
• Browser: Chrome
• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

[nperez0111]

Thanks for pointing this out @ysds, unfortunately we are working on other things at the moment, so we likely won't get around to this within the year given the holidays.

It seems like you've already got a fix, I'd be happy to review a PR implementing your suggestion for the menus you've identified