Thanks Cody - what I’ve found is the culprit seems to be mouse capture. On Linux at least, when a widget captures the mouse, it prevents the FINGERUP events from firing for that finger index in FLinuxApplication.
We can take a scorched earth approach here and remove mouse capture from any interactive widget events, but we were wondering if you had a better idea for how to handle this - our first release is fast approaching, so if we can’t fix this at its core we at least need a workaround. If this is a reasonable course of action, do you have any thoughts about how it may affect our UI generally in a negative way?