REGRESSION: Keyboard shortcuts in windows and dialogs doesn't do anything

[aecreations]

Clippings 6.1.2+ on Firefox 65.0b10

Major regression issue discovered on Firefox 65 beta.

In Clippings Manager, pressing keys such as F1 (for Clippings Manager keyboard shortcut help), DEL (to delete a clipping or folder), CTRL+Z or Cmd+Z (undo), and so on, have no effect. And when pressing CTRL+F/Cmd+F (search clipping/folder by name), the browser's search bar appears instead.

In the other dialogs, pressing ENTER (accept button action) or ESC (cancel) doesn't work, either. In the keyboard paste dialog, pressing TAB doesn't toggle between search by name and shortcut key paste, and F1 no longer displays the list of shortcuts.

This issue is not happening on Firefox 64.

[aecreations]

I have complained on the Mozilla Add-ons Blog in a comment to their blog post about the upcoming release of Firefox 65: https://blog.mozilla.org/addons/2018/12/20/extensions-in-firefox-65/#comment-225600

[aecreations]

According to MDN, the "keypress" event is deprecated: https://developer.mozilla.org/en-US/docs/Web/Events/keypress. The suggested replacement is "keydown" or "beforeinput".