TYPO3 Core

I have discovered broken buttons in the element browser.

To check if this is my fault I set up a fresh 4.4.2 project in combination with the dummy-package, created 3 pages in the pagetree, told one of the pages to show content from another one instead -> element browser looked fine.

I installed (just added in the EM) tt_news 3.0.1 then, once again i wanted to tell a page to show content from another one -> element browser has some html appended to the icons (see attached screenshot)

The Icons look like this now: [ICON]','',0);">[ICON]','',1);">Home

This Problem persists after removing tt_news again, that is the reason why i think it's an 4.4 core issue.

(issue imported from #M15521)