Can't change heading when someone else typing

[Oremountainflorian]

Etherpad Version 1.8.7
ep_headings2 Version 0.2.13
Browser Mozilla Firefox 84.0.1
Other plugins ep_comments, ep_align, ep_table_of_contents, ep_font_color, ep_show_author_on_hover

Problem description

When someone else is typing at an arbitrary point in the pad, it's not possible to change the heading. If you click on the heading icon, the box shows up, but then it always disappears for a short moment everytime someone writes/hits a letter, so it's really hard to get the right moment to change the heading.

[JohnMcLear]

If you comment out https://github.com/ether/ep_headings2/blob/master/static/js/index.js#L61 - clear cache and refresh, does it still happen?