By default, only the left click is forwarded to the device, and secondary clicks trigger shortcuts (the behavior can be configured by --mouse-bind=xxxx). But when the mouse mode is relative (AOA and UHID modes), forward all clicks by default. This makes more sense since the cursor is handled on the device side, the user expects all mouse buttons to be forwarded. Refs <https://github.com/Genymobile/scrcpy/issues/4727#issuecomment-2069869750> PR #5022 <https://github.com/Genymobile/scrcpy/pull/5022>