Xduoo x20 pause problem

[tokariew]

I finally jumped from unofficial build of rockbox to official, and after a bit of testing, it seems that when pausing on rockbox software after around 30 seconds, player restart.
I factory reset the main software, i removed rockbox install, and clean install on fresh, without modyfing any settings, and rebooting on pause is persistent for me. is it a common issue?
On unofficial old port i didn't have such issues.

Edit:
It seems that this is present for flac/opus files. For mp3 files it seems to work fine.

[tokariew]

After patching 1.51 firmware, and downgrading with it, rockbox started to  work fine for me, seems that 1.8 firmware were buggy for my player.
Even on standard player usb-dac function was borged.