One problem is that the forum software currently allows a message to be edited after someone replied to it. The exact edit and reply dates not being shown can cause confusion for those who read the thread at a later time because both dates become identical ("5 days ago" for 2 messages posted in the same day). Example: https://sourceforge.net/p/advtor/discussion/2254385/thread/efc91b72/ - after the error from a posted screenshot was corrected and a reply was given to that post, the screenshot was replaced with another one showing another error.
Also, another problem I found with my settings that allow anonymous users is that the forum allows any anonymous user to edit any other user's messages. There is no cookie check to prevent an anonymous user from editing a message posted by another anonymous user.