Visual artifacts decoding HEVC with hardware-accelerated decoder (macOS Catalina, MacBook Pro i7 + T2 chip)
Using specific sample provided; see screenshots (hwdec-onn.png) for the issue.
Issue does not happen with software decoder (hwdec-off.png), but also does not happen with QuickTime Player (currently unable to verify whether the latter was using the same hardware-accelerated decoder or not).
Not sure whether this is an actual VLC issue, but I figure someone here might have an idea as to how I can determine where the issue is more precisely.