How to Scroll Around in Loupe View WHILE USING Tools
I’ve always found using the Adjustment Brush and Spot Removal Tools to be a real pain in the ass when trying to maneuver around a large image while zoomed in.
I lost my mind with this irritation and broke down and googled it — you can hold the SPACEBAR down to get a Hand Tool to scroll around while in the Loupe View.
Credit where it’s due: https://forums.adobe.com/thread/668901