Nextcloud 2.0.0 / Android 7.0 / Samsung S8 - Client feels a bit amok?

Hello,

It looks like that the client works ok - it does sync images with the server as supposed.
But since the last update, the Nextcloud icon in the task bar appears quite often and “blinks” and then disappears. I am not constantly watching my smartphone, but this behavior happens at least 10 times a day or more.
I could ignore this (it just looks broken) but I fear that it does increase the power consumption…

Best regards