The bug
When you simply click on input boxes in a certain order, the typing cursor shows for all the boxes. However, what you type will only go in the last box that you clicked.
Note: I get the impression that this happens when you first select a box "below" the next one.
How to reproduce
Go to a place where there is more than one input box (for example in a structure block or in the "add multiplayer server" menu)
Click on all the input boxes in several different orders
Examples
Here are some examples in videos:
Bug additions (Thanks Matolcsy Attila)
The bug is only visual, you can still only edit one box a time
Bug only appears when using mouse clicks, not while using (Shift)+Tab
Bug only appears if Server Adress is selected first, not the other way
Bug additions
The bug is only visual, you can still only edit one box a time.
Bug only appears when using mouse clicks, not while using (Shift)+Tab.
Bug only appears if Server Adress is selected first, not the other way.