Hiding controls removes clickability until mouse is moved again

Is your feature request related to a problem? Please describe. Many times, in NextCloud, in the gallery slideshow view, when the user looks at the image more than 5 seconds, the next/prev navigation buttons are sliding away unnoticed. Then the user clicks on the place where he kept the mouse pointer above the button to go to the next image, but when clicking, the slideshow view is suddenly closed, revealing the file list. The controls come back if the user moves the pointer before clicking, but if he doesn’t, it can be very annoying, re-opening the images all the time.

Describe the solution you'd like Please add a simple setting somewhere to change the 5 second timeout.

Describe alternatives you've considered N/A

Additional context Currently I'd be fine with whatever method to change this timeout, even in the source of the installed NextCloud instance. But I'm unable to find where in the code this would need to be changed.