Transforming objects

Hey, I’m currently working on a game, where I need to transform objects a lot in the modeling mode to snap the objects perfectly to another using the feature to move the gizmo to a corner or side of the object. But since today I’ve encountered the problem that I can’t move the gizmo or move the object when transforming the object. The coordinates in the lower left corner change when I’m trying to move the object but the object doesn’t move and if I cancel the transformation and transform it again, the lower left coordinates are again set to the original coordinates.
If I go into my other map, I can use the transformation again like I used to.
So I don’t have any clue how this happened and I’ve been trying to fix it since an hour.
I’ve read a few things and here are some things I have checked:

  • The viewport is set to default viewport
  • The gridsnap is not on
  • I can’t turn on the “Show Transform Widget” in the settings
    Thanks in advance!