Persistent volume popup on Shield TV
There is a volume popup bug on the Android TV version of VLC. The popup reads "Volume 100%", and is very large and centred in the middle of the screen. It appears at random random times, sometimes disappearing quickly, but often remains for prolonged periods, flickering on and off periodically. Even if it does go away, it will inevitably return within 5 minutes or so.
I've spent quite a bit of time experimenting with the settings in both VLC and the Shield itself but there appears to be no way to fix this. The only temporary fix I've found is to stop the video and then restart it. This will remove the popup for a few minutes, but it soon returns.
It appears regardless of whether I use the Shield remote or the game pad. I've also disabled HDMI control and even locked the volume to max, but the popup still appears.
The videos I'm watching are in MKV format with soft subtitles in SSA format. I downloaded VLC from the Play store, so it should be the latest official release.