[Milhouse]

Thanks, I've been able to reproduce on the Pi1 and identified the first "bad" build, it's #0304.

Interesting. Can't see an obviously suspicious commit there. Can you confirm if it's in the firmware/newclock4/kodi/openelec groups to begin with?

That's a bit tricky, as it's rather difficult to build these old builds, although I'll have a go tomorrow.

There's no firmware change between #0303/#0304 (I linked to build #0303 by mistake, you may want to re-check the changelog of #0304), so unlikely to be firmware. There's only one OpenELEC change in #0304, which would have no effect on RPi, and there's a handful of XBMC changes.

The most relevant change would seem to be the two dirtyregion additions in newclock4, however these are no longer in newclock4 and don't appear to have been merged into Kodi, so might have been dropped or morphed into a change elsewhere.