I don't know what I pressed, but this happened before.

  1. I can't undo or redo in object mode but it still works in edit mode.
  2. When I move an object to another layer I need to press an "OK" button.
  3. Can't use the lower half of the left toolbar in object mode, it is grayed out.

Here are a couple pictures:

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What is causing this strange behavior?


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