This is why you're seeing all those Chrome extensions today

The really bad news is for page actions.

Google made this change hoping to make extensions more visible to the user, seeking a "security by awareness effect", buts for page actions they now have the opposite effect, "extension invisibility".

If users hide a page action extension to the hamburger menu, which can be done as easily as dragging right edge of the address bar to the right, the page action icons do no appear at all, so the user cannot click them.

Google should ensure that if the page action icon is hidden to the menu, it then appear in the address bar, to greatly improve usability and "security by awareness".