Comment thread actions: hover-only controls and unlabeled buttons in ThreadsSidebar

[Ovgodd]

What’s broken?

Hello, I'm opening an issue about comment thread actions accessibility

In the comments sidebar, each thread has emoji and options buttons in the comment header. Two issues:

1. Hover-only controls
These buttons only appear on mouse hover. Without hovering first, they are not reachable by keyboard (Tab).

2. Unlabeled buttons
If buttons are made visible via hover, Tab can reach them but the screen reader announces only bouton with no accessible name:

Control	SR announcement
Emoji button	bouton
Options button (closed)	bouton
Options menu (open)	Modifier le commentaire, Supprimer le commentaire ✅

Menu items are fine; trigger buttons are not.

What did you expect to happen?

1. Make action buttons keyboard-accessible, always visible in sidebar, or shown on :focus-within, not only :hover.
2. Add aria-label on emoji and options buttons (e.g. "Add reaction", "Comment options").

Steps to reproduce

Focus in a comment
buttons does nt appears

BlockNote version

0.51.1

Environment

windows

Additional context

No response

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 💖