To report a bug simply type "report bug" in your Command Bar (Command-T) and select “report bug.” From there, you will be able to share all of the details about what you've been experiencing along with any images you have that may help our team understand and resolve the problem.
We also recommend trying the following things to resolve the issue:
Confirm your Arc is fully up to date - type “update” in your Command Bar > Select “Check for Updates”
Restart both your device and Arc