Resizing the window now breaks the game canvas

[XenonA7]

As of version 1.6.0, I am seeing the canvas resolution break when resizing the window. This makes opening a second session and moving it to another monitor very difficult. Restarting the map editor will fix the issue.

I suspect that the fix for #265 must have caused this new issue.

I am using Windows 10 with multiple 1920x1080 monitors.

[2767mr]

@XenonA7 Could you check whether this fixed your issue?

[XenonA7]

This works perfectly on my end!
I can also move the map editor between monitors of different resolutions just fine now, which was not possible before 1.6.0.