Selecting & deselecting objects is buggy too
While working in a file:
Attempting to select more than one object at a time to move them simultaneously works, but then I cannot deselect the objects by clicking the art board as in all previous versions of Illustrator.
I have to click on each object at a time to deselect them. It doesn't always happen, but it happens often enough that it becomes an issue with work efficiency.
3
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Melinda, looks like one of your Shift keys is stuck.
I tried to simulate that and got the same behaviour as you described.
I suggest that some app (never caught Ai on that though) must have forgot to release it. Try to restart you computer and check if it is fixed.