The bug
Hover and click events of text components are at the wrong position for right-to-left languages. They are at the position where they would be if the language was light-to-right.
How to reproduce
Change the language to Arabic (first right-to-left language in languages list)
Take a screenshot
Try to click on the left side of the link in the chat
→ It does not work, however clicking at the right end of the text opens the screenshot
Appears to have been fixed at some point between 1.15.2 and 1.16-rc1.