Description of Bug: Attempting to write on a sign that had an unusual writing textbox produced a glitched sign that crashes the client upon being read. The sign does not show the actual text that was written on the sign, instead seems to show some kind of code for the text boxes.
Reproduction Steps:

1.  Have a sign with a strange text box. (I do not know what causes the long text box bug, unfortunately, so this may not be reproducible until that is discovered.)
2.  Add text to sign.
3.  Read sign.
4.  Game crashes upon being read.

Error message (if applicable):

___________________________________________
############################################################################################
ERROR in
action number 1
of Draw Event
for object SignTextPopup:

DoAdd :1: illegal array use
at gml_Script_WrapTextToWidth
############################################################################################
gml_Script_WrapTextToWidth (line -1)
gml_Script_DrawWrittenText
gml_Object_SignTextPopup_Draw_0

Screenshots:

While writing:

Attempting to read the sign:

Update:

I have discovered that the sign is now readable, but only when placed down. When read from my inventory, it will crash the client.