This has happened to me a couple of times. To reproduce this I created a brand new scene, made a probuilder mesh, and extruded it so I would have 2 faces next to each other. I also set the scale to 8, I don’t know if that causes this or not but that’s the scale I usually use. Now I opened the UV editor and this is what it looks like:
So then I dragged the face I had currently selected:
As you can see, the other face, for some reason, comes along with it while I’m dragging it, but as soon as I let go, it goes back to where it was:
This happens every time I try to drag the face. Here is me dragging it back towards the other face:
And here is what happens when I let go of it.
This is really annoying because sometimes, the faces are far apart from eachother, and I want to put them together with the alt key shortcut that snaps two faces together. However, when I drag one, it also moves the other one in this weird way which means the alt key shortcut does nothing and the faces won’t snap together. Why does this bug happen, and how to fix it? Sure, one could eyeball it to get the two faces to be next to each other, but is there any other workaround that lets me still use the alt key snapping feature?