The JOSM plugin touchscreenhelper looks useful for using the left mouse button instead of the right for moving the map. “Activate by holding T and slip map with left mouse button”. But it doesn’t seem to work. Is there anyone here that uses it and can tell me how to it’s supposed to work?
Check if the plugin is enabled and look for conflicts with other plugins.
Yep, it’s enabled, & there are no conflicts w other plugins