@cicbar thank you for the feedback!
As @moderndayhippie mentioned, and as is the case for most of our users, the app working perfectly in background mode.
Yes there are few reports similar to yours, and we are working on fixing this issue as it can definitely be annoying to you and others. As you have guessed it, this is a combination between hardware and software issue.
We should have an updated version with a fix in the coming few days. Stay tuned :)