[dmdsoftware]

Are you using the "continue downloading after player is user-stopped" in cache settings when it stops?

I'm gonna check now, I've never launched Kodi here since yesterday (I test on a different machine than my HTPC)... checking...

No, that option is unchecked. If there are specific tests you want me to conduct with this option, just let me know. Combinations of different settings, whatever, just let me know. Thanks!

The behaviour you described is expected if you don't have that setting enabled. The download stops if you stop the playback.

Right now if you play+cache the file again, it will only playback what it has downloaded. I'll work on having it resume download.