TYPO3 Core

While performing context menu actions within the pagetree on big sets of pages, like deleting or pasting, there is no visible loading state in the pagetree.
There is a loading progress bar in the "content container" but this is not enough visible context for backend users.

This makes it look like there is nothing happening and can even cause the user to perform the action again, also because the pagetree is not blocked from further actions.