Android app black screen?

[Klaus major-k]

Hi all,

today I used my Android app at home, no problems.
Then I went to our band rehearsal, started the app and 
only got a black screen!?

Everything else on the device worked without problems.
De- and re-installing the app fixed it.

Has someone also experienced something like this?

Samsung tablet TAB A, Android 5.1, LC 9.6.9.


Best

Klaus
--
Klaus Major
https://www.major-k.de
https://www.major-k.de/bass
klaus at major-k.de