When editing captions with the new captions interface, the interface becomes extremely slow to react. Selecting a caption to edit it in the Text panel can take several seconds just to register being selected, than, the caption text is selected, then deselects and then re-selects before being able to type. During the lag, keystrokes revert to keyboard shortcuts causing unwanted edits or changes on the timeline. Quite often, changes that are typed do not register and the caption reverts to the uncorrected text