[Huey]

These issues are really hard to identify. I'd be very surprised if it's anything specific to these test builds, and that it should affect all platforms, so you may be better off filing a ticket on track.kodi.tv and/or starting a new thread in the OS Independent sub-forum. 

but test builds kodi-17 worked without problems.

I can confirm that I have noticed this at well. In shows it shows really well: it seems like setting current show to watched, toggles previous to unwatched. But in MySQL dB status is watched so a sync set status back to correct settings. Not sure when this behavior has started, but I think 101x ish. Just updated again, will try to keep an eye out.

Think it was import entries in the advancedsettings.xml, removed them and all seems well now.