Signs - Text Length Inconsistency Across Platforms

A somewhat trivial bug, but a bug nonetheless. In the Windows 10 edition, fewer characters can be typed into a sign than the Android edition.

I was expecting to be able to type the same amount of characters on a sign across all platforms of the same game version.

Steps to Reproduce

1. Place a sign in Win 10 edition and type 1 as many times as possible on the first line (max 14)
2. Repeat the above on an Android device and notice that a maximum of 15 1's can be typed on one line

Tested on Windows 10 PC, Samsung TabPro Android 4.4.2 and Nexus 5 Android 6.0.1

Update by [Mojang] Mega_Spud (Jay Wells):

As pointed out by [MCPE Helper] Dylan K. Taylor, it also seems that in Windows 10, the number of characters is limted to the width of the sign, whereas on Android, it's dependant on the number of characters, which is 15.