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Created attachment 163291 [details] video Sometimes IDE misses 1-2 seconds in order to update built-in editor. Stable testcase: - Open text file - Press ENTER - Wait 0.5 seconds - Press ENTER 10 times very quickly ==> IDE duplicates original line and I see 2 lines with text. Sometimes I see 2, 3, 4, ... copies. I attached video with my bug.