Weird Keyboard Behavior

Description of the issue: Keyboard input in YouTube is bonkers. It worked fine until yesterday afternoon. I changed no settings and installed no new plugins.

Steps to Reproduce (add as many as necessary): 1. 2. 3.

  1. Moving the the slider pip to advance the movie fails. The volume slider doesn’t work either.
  2. The left and right arrow keys, which used to go forward/backwards ten seconds no longer work.
  3. The spacebar no longer starts and stops video—it now pages down.
  4. Page Up and Page down keys suddenly stopped working in Kindle Web app.

Actual Result (gifs and screenshots are welcome!):
Keyboard is not functioning, and the mouse cannot be used to advance the movie.
Expected result:
Left and right arrow keys go back and forward ten seconds in the video. Dragging the slider bar with the mouse should skip around the video.
Reproduces how often: Always

Operating System and Brave Version(See the About Brave page in the main menu): Mac Sequoia 15.0.1, Brave 1.73.105

Additional Information:The keyboard and mouse work as expected in Firefox.