Scrolling outside of the Canvas when using the extended virtual display

[MeFisto94]

Whenever I connect to a device that has the virtual display driver and put the viewer into full screen mode, I can move to where the base monitor is supposed to be and the viewer will then scroll there, rendering the canvas grey and causing a scrollbar (despite being in fullscreen mode).

Before scrolling, the resolution matches the one I set up (the one of the virtual display), but due to the panning/scrolling, the Canvas size also increases (here: in width), causing the scroll bar to be visible.

Expected behavior: Not being able to pan outside of the virtual display at all.

[RudiDeVos]

The virtual/ extended displays were a hell to develop and some bugs are possible.

This is something that i need to attack when i have a lot of time to dig back in that code part. Can't give a time estimation Thanks for the report