What would cause driver side window to one day not to lift evenly?

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Drive side window did not lift evenly and was stuck in that position for several days. Managed to lift front of window while bumping window button up and down until window was fully raised. But noticed, it was too high and door would not close properly. Managed to lower window enough for door to close. Now when door is closed, auto lifting of window doesn't close the window tightly, leaving a 1/4" gap between window and window seal.