Text on Signs is weird / Sign letters are erased when you write numbers or exclamation marks

This bug affects the text on all signs in Pocket Edition 6.0 and 6.1. What it does is if you press 1, !, or 6, it would skip a line of text. Normally, pressing these buttons would just continue writing. It will cause the text on the sign to skip one line. It gets triggered when you press these buttons. You are forced to press space 2 times, and then typing these letters and symbols.