I have pretty much the same joystick problem, FYI, on a Galaxy S8 running Android 8.0.0. Also works fine on the Google Play version. Just pulled the current apk from the dropbox and checked it.
There’s also a little glitch that the keyboard screen doesn’t automatically open when I’m in map mode and I select N to make a note. Makes it a lot slower to do it manually every time. It does auto-open in other contexts.
Thanks for all the work on this. Yikes my lab escape is a whole new bucket of mutated fish these days…