Steps: 1. select pixels with 'rectangular selection tool' 2. Copy selection with 'copy merged' 3. The 'line tool' is triggered automatically and impossible to deactivate. 4. draw a short line to get rid of the line tool 5. Now I can select again another tool
I cannot reproduce this on KDE Neon based on Ubuntu 16.04, I guess this is an OS X specific issue.
This bug happens just with my tablet - no problems with my keyboard and mouse. (I use a wacom intuos pen & touch)
I cannot reproduce this with 4.0 beta 1 or 3.3.3 on macOS with a Wacom Intuos 3 tablet.
This bug doesn't bother anymore in version 4 beta :) I'm looking forward for a working open gl implementation as the work around isn't effective enough. Don't like to hear my Mac like a racing car if my brush keeps painting all time.