Middle Mouse Click Issues

QCAD Professional QCAD Troubleshooting and Problems
1

QCAD Version: 3.32.9
Downloaded package (file name): qcad-3.32.9-pro-linux-qt6-x86_64.flatpak
Operating System: Debian 13

When I click the middle mouse button without panning, I understand an “incremental zoom” is supposed to happen. For me, the ‘drawing board’ goes blank, the grid disappears, and the scale info in the lower right corner reads a nonsense number as shown in the screenshot. The only way I can get back to normal is by clicking ‘Autozoom.’

If I accidentally click the middle mouse button while I am in the middle of a tool command, such as selecting a second point after having selected the first, QCAD will freeze and linux asks me to force quit the application.

Screenshot From 2026-08-14 13-23-58
Screenshot From 2026-08-14 13-23-581758×1124 57.8 KB

Screenshot From 2026-08-14 13-28-09
Screenshot From 2026-08-14 13-28-09708×171 2.78 KB

2

Please check your navigation preferences:

Edit > Application Preferences > Graphics View > Navigation > Middle mouse button zoom factor

I have a hunch that this might be zero or very small. Change it to, for example 1.2 or 1.0 (to disable middle mouse button zooming).

3

Once again, my issue was a setting I somehow overlooked… Yes, it was set to zero.

Thanks Andrew.