SUMMARY Canvas blacks out when zooming in when using 2 or more fisheye assistants,black also depends on scale of fisheye assistant , if assistant is covers the whole canvas blacks out at (suppose) 100% zoom , if assitant scale is small , can black out at 141% zoom. STEPS TO REPRODUCE 1. Any size canvas 2. Add 2 or more fisheye assitants 3. Zoom in OBSERVED RESULT Black out EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
This bug has already been reported. *** This bug has been marked as a duplicate of bug 401940 ***