Somehow the new "More Actions" button (the Hamburger menu) is broken in Jenkins 2.519.

It should have three different states:

• when there are no "More Action" items: then this button should not be visible at all.
• when there is only a single item that would land in the "More Action" items menu: then this button should not be visible and the single item should be shown instead of the "More Action" items menu.
• when there are more than 1 items, then everything should be shown in the new menu.

Currently, in my Jenkins setup I have a single action that is shown:

(It is from the https://github.com/jenkinsci/lockable-resources-plugin).

When I click this item, I land on a new page in Jenkins:

On this page the Hamburger menu is now replaced with a lock item, and the Hamburger menu is not visible anymore. Is this the expected behavior? For me, it looks like a bug...

A totally different thing is why this icon is available anyway. I think we should have a better guidance when to create such actions. Actually, I would have expected that this action is part of the Jenkins configuration menu and not in this new menu.