Bug fixes and stability improvements
- Fixed issues where closed polls and quizzes reopened automatically, or could not be hidden again from the dashboard.
- Deleting all comments and emoji now updates the screen without a page reload.
- Fixed login state conflicts when using anonymous participation and account login across multiple tabs, and errors when joining the comment screen.
- Fixed repeated attempts to join rooms whose events had ended. (Desktop app v2 only.)
- Kept the room controls visible when a presentation starts automatically. (Desktop app v2 only.)