Thats strange…
I have the problems on a Samsung Galaxy Tab device with Android 8.1.0
On my Google Pixel smartphone I dont get this problem (Android 10)
On a Galaxy Tab 4 with Android 5.0.2 there are also no problems
EDIT:
I just noticed that if I set the TinyDB Tag of the Value to " " (empty) in the Companion App and the recompile and try to install, I have no problems.
Could it be, that the Companion App uses the same Database than an App and that, when closing the companion App, the Database will not be emptied?
EDIT2:
Ok, it does not work as said above sorry…