Character won't type when shift is held in a structure block

This is a very annoying bug because you hold shift when you want to capitalize a letter. It's not the fact that you can't capitalize anything when writing in a structure block. It's only that it won't type when shift is being pressed down.

 

HOW TO RECREATE

 

Open a structure block, press shift while typing, realize you have to type that letter again.

(I don't have a way to show