Hello,

I've been having an issue with window snapping and I don't know what's causing it. When moving a window and it snaps to another application's edge, or monitor edge, it jumps around and/or changes in size slightly. When releasing the mouse button, windows also frequently move away from the edge it was supposed to snap to.

I didn't use to have this issue and I don't recall making any changes recently that could've resulted in this behavior, both in Windows 10 or DisplayFusion. I'm on Windows 10 1803, 17134.285 - DisplayFusion 9.4 Beta 3 but downgrading to 9.3 made no difference. Snapping is disabled in Windows, enabled in DisplayFusion.

Attached is a short video showing the described behavior. SnagIt wouldn't let me record it so I had to use my phone instead. It's not limited to the application window shown, i.e. I get the same behavior with a Chrome window.

Any help would be appreciated. Please let me know if you need any additional information.

Thanks!

3 monitors, same scaling level (100%), different resolutions (4k, 1440p, 1080p). The video was on the 4k monitor but same behavior on any of them.

I do also have the same issue on my work setup; 4 monitors, 100% scaling, 1080p x 1, 1050p x 3. Windows 10 Enterprise (1709, 16299.125), DisplayFusion Pro 9.4 (Beta 3).

I've also noticed that it doesn't affect all applications... here's some examples of affected and unaffected applications/windows:

Affected:

Chrome
ISLC

Unaffected:

Windows Explorer
VLC

Should window snapping behave differently for different types of windows/applications? Not sure where the root of the issue lies.

No, when snapping is disabled in both Windows and DisplayFusion, the window just moves past the edge and there is no snapping or change in window/titlebar dimensions.

If I disable snapping in DisplayFusion only and re-enable it in Windows, it doesn't snap to the monitor edge (while mouse button is held) but it moves the window back automatically to the edge after releasing the mouse button. No change in window/titlebar dimensions during the process, so this seems to be limited to the snapping function being enabled in DisplayFusion.

Chrome:
Version 70.0.3538.54 (Official Build) beta (64-bit)

No custom theme but I do use a couple flags which may affect the window behavior:



I tried setting both of them to Default however it behaves the same after. It's not as severe as ISLC since the window size isn't affected, but when moving any Chrome windows next to other windows or monitor edges, it seems to jump away from the edge(s) rather than sticking to the edge(s); same as ISLC in the video minus the window size changes.

I wish my video capture in Snagit was functional because this is rather difficult to film with a phone while using the other hand to show the erratic snapping/movement issue, heh.