Created attachment 112423 [details] video of aligning issue This may only happen with monitors with a small difference in vertical resolution. In my case the left primary monitor is 1920x1080 and the right monitor is 1280x1024. The attached video shows how the right screen is snapping to a vertical offset of 28 and 104 and nothing in between so it's impossible to drag it to the position where bottoms would line up, which is probably at a vertical offset of 1080-1024=56.
IIRC you should be able to forego the snapping by holding CTRL presses. Could you try this and report back (I can't look into the code right now)?
If you can provide the information requested in comment #1, please add it.
Sorry forgot, but no, alt/ctrl/shift or a combination of those do not disable the snapping.
Thanks for the update. There is indeed an older ticket about the same issue. *** This bug has been marked as a duplicate of bug 348241 ***
Well I would still prefer the second monitor to snap to the lower edge of my main monitor, not just to disable snapping and then having to align them pixel-perfectly...