I have roughly studied the problem in general terms. And I think that we will never wait for a solution from the developers. Because he doesn’t exist. This is my version.
And this answer should come not from an ordinary user, but from the developers themselves.
One competent post from them is enough to prevent users (including moderators) from having unresolved queries and spending 7 years in endless discussions. Until this becomes possible in new versions of Chromium.
Therefore, the only direction is two: Sidebar and Unpin.
And for me it would be an ideal solution to set up: Permanent Unpin, without daily clicks on these arrows.
A post from a developer with 3 words “Browser Action Popup” would have closed it 7 years ago. Just like the “Browser Action Popup” itself closes . And not this silence from them.