strip is not visible
Description
when playing a video with a white background and changing the volume or brightness, the adjustment strip is not visible.
Expected behavior
the strip is located on a gray translucent background and it is visible
Actual behavior
a white stripe on a white background is not visible
Steps to reproduce
- play videos with a white background
- change the volume or brightness by moving your finger along the edge of the screen
App version
VLC 3.3.4 f-Droid
Android version
9.0
Screenshot / video
