"description" and "comment" fields are restricted to 255 char. However after some research I found that all the supported databases support longer then 255 char
I would expect users to want to write more then 255 char in a comment (I know I personally can).
I have included diff of my proposed solution as a attachment (I am unfamiliar with the procedures for submitting patches here)
A discussion has been started on dev ML: https://markmail.org/message/7utrgejc2c44i37u