KODI V17 Squashed Video

I’m having a video problem with KODI V17 running on my Android 5.1.1 TV box.

When trying to play TS files (generated by NEXTPVR) the image is squashed with huge black bars top and bottom.
I can manually click “stretch to 16×9” to correct the problem.

I have tried V17 beta 1 and beta 2; same results.
If I reload Jarvis 16.1 the problem goes away.
I believe I read that V17 had a major rewrite to the video player?

I have a PC KODi V17 setup which works fine.
The problem seems to be V17 on my Android box.

I have come across 1 TS file that works OK, but most of them don’t.
Something to do with a framesize flag at the start of the file?

I’m curious if anyone can confirm using V17, on an Android with TS files.
Thanx.