Colored Signs Disappear When Broken

Ex cave ator

GN(In Game Name): Ex_cave_ator
Bug: colored signs do not open your own shop chests when clicked on and disappear when broken.
Time/Date: 11:18 PST/ 04/24/14
Steps to reproduce: Place colored sign on shop chest click on sign to open chest, then break sign.
Evidence:

Klitch

GN(In Game Name): Ex_cave_ator
Bug: colored signs do not open your own shop chests when clicked on and disappear when broken.
Time/Date: 11:18 PST/ 04/24/14
Steps to reproduce: Place colored sign on shop chest click on sign to open chest, then break sign.
Evidence:
~ @Ex cave ator

You cannot currently color shop signs and have them function correctly.

abbythrowsstuff

Resolved as martin said color signs can't work for shops.