I find the autoscroll feature that centres a caption in the captions tab very frustrating. I'd like the option to turn it off. It scrolls so slowly, and there's often a delay after clicking. That makes it very difficult to select and double click a caption as I'm working through them. I'd rather just keep mousewheel scrolling and be able to select, double click, and edit the captions I need to manually.
Turning off all video tracks helps, but the choice to disable the auto scroll to centre the caption that is clicked within the captions tab would make the whole thing so much quicker and easier to use.