Automatically change focus to type notes when a sidebar or popup opens

[avidseeker]

Feature Request

Automatically change focus to type notes when a sidebar or popup opens
For example, in Firefox, pressing CTRL + H opens the history in the sidebar and automatically focuses on the search bar.

[Rayquaza01]

The popup should already auto focus the textbox.
The sidebar can't because of a quirk with how Firefox handles sidebars. When the popup is opened, focus is given to the popup. This makes it easy to auto focus the textbox. With sidebars, the focus is left with the current tab and is NOT given to the sidebar. There is no way for an extension's sidebar to take the focus without the user clicking into the sidebar AFAIK.

The bookmarks and history sidebars can auto focus presumably because they are part of Firefox and not an extension.