[Resolved] Color on Signs (in GUI) do not function correctly.

When I try to use color with the § symbol on Windows 10, it can glitch very easily. When I backspace on a row with color it deletes too many characters. Sometimes its 2, 3, 5, etc. Overall colors don't work well on the Windows 10 version.

How to Replicate:
1. Place a sign.
2. In the GUI, add a color code such as §1.
3. Add some words.
4. Try to backspace. This should create the bug.