Is there a bug at this forum?
I made a post Math question then later i wont to add some info to it but there was no button for modify... strange.
Cheers Lucky Strike
It is NOT a bug, more a security feature.
When the modify button dissapears it means you have to enter your password again with the update session button in the forum header.
The forum software just behaves that way, I also freaked out when it happened for the first time.