Issue updating video library in latest nightly

I just reinstalled the latest nightly (version 12) to give my system a clean start, but I'm having an issue with library updates. Every time I run a library update, it only adds 2 movies at a time then stops. If I run library update manually it adds another 2 movies, but never more.

I've not seen this issue before, I do realise I'm on a nightly build but thought I'd see if anyone else had the same problem or any suggestions to fix? I've tried removing and re-adding my sources but get the same problem.

Quote from chewitt

Not something I've seen/heard of before. Put Kodi in debug mode, reboot, repeat the issue then run "pastekodi" and share the URL.

EDIT:

Rolling back to LibreELEC 11.0.6 stable seems to have rectified the issue for now, I will wait until the beta or rc release of 12 before updating again.