As Kojak said - the chest (and that includes the puzzle chests!) can relock on you at any time, and you have to re-pick it, even if you have the chest open at the time. A real pain in the ass. At least you can then pick the "puzzle" chest to open it back up if it locks on you, as long as it hasn't done a full reset.
That wasn't the problem. The problem was I was getting message you can't steal this plus it weighted 200 stones. I got it on both Luc and sis's theif. It was only after I paged a GM I was able to steal it. IT had done a FULL RESET. I know how to do testing. Also there was a noticeable lag and freeze while it was stuck. After it became unstuck the lag and freezing vanished. So I think is safe to assume the GM did something. I also think it safe to say someone was running an illegal 3rd program.
It's okay I KNOW sis and I don't sit at the "COOL KIDS TABLE" with the Devs like the other 99% of old time vets. I can live with that but I can't live with a game being broken by cheats, scripts and hacks.
I can now say having a
BACHELORS DEGREE in IT Networking that a good bit of the problems with UO are packet corruption due to hacks/scripts/cheats etc. I'm sure your all gonna pile on and say I don't know nothing, and my degree is BS. Some will probably make snotty comments like I got my degree at DeVry or ITT Tech. You can't hurt me. I know the work I did. I know my stuff. I would say that 99.9% of those nasty people are the RMTers, Rares people, and those that are sitting on their butts making income from UO that aren't paying taxes on said income.