Prevent the YouTube UI from appearing when using arrow keys, but make it visible on mouse movement (automatically detects all .ytp- elements)
< Feedback on YouTube Hide UI on Arrow Keys, Show on Mouse Move
You can update your script now.
Some errors fixed
Some optimization
auto update added
A bug fixed which makes script dont work when entered new video until f5 page
Génial Good thinking
The options we all wanted without knowing-it.