SUMMARY
When a video is played on the computer, the progress bar slider on the phone seems to be mapped to a very small portion (a few seconds, maybe tens of seconds at most) around the position. However, changing the progress bar slider position on the computer correctly changes the one on the phone

STEPS TO REPRODUCE
1. Play a YouTube video (I noticed it on https://www.youtube.com/watch?v=RS3x8-Fsi7E and https://www.youtube.com/watch?v=qOi4Ao40IYA, but every other video I tried had the bug) and put the playing position in the middle for instance
2. Open the Multimedia control on the phone
3. Try to use the position slider

OBSERVED RESULT
Both progress bars should be mapped one to the other

EXPECTED RESULT
A full right swipe from the middle position on the first video (which lasts 1h, so 30 minutes in both directions) resulted in my testing in about 5 seconds

SOFTWARE/OS VERSIONS
Operating System: Fedora Linux 41
KDE Plasma Version: 6.2.3
KDE Frameworks Version: 6.8.0
Qt Version: 6.8.0
Kernel Version: 6.11.8-300.fc41.x86_64 (64-bit)
Graphics Platform: Wayland
Processors: 8 × AMD Ryzen 7 4700U with Radeon Graphics
Memory: 15.0 GiB of RAM
Graphics Processor: AMD Radeon Graphics