I was able to duplicate the problem, but not with Jen's Quest. It appears to be a problem with the updated template game. I tested it with multiple interpreter versions (the hacked 2.936 that ships with the template game, the unhacked 2.936 on agidev.com, and the 2.917 I use with Jen's Quest), and the problem occurred with every interpreter version I tried.
Jen's Quest is based off the template game that shipped with AGI Studio 1.31...whatever the problem is, it was introduced into the template game since then, because the problem doesn't exist with my game.
To get some info about the nature of the problem...I tp'ed to room 2 over and over again, and the "now" memory did increase every time. However, it did not double, which means that it's not simply a matter of the buffer not being reclaimed. As I said, I'm able to tp to my own room 2 as much as I like and the "now" memory stays constant.
I'd say this problem warrants some investigation, because you're probably not the only one it's going to hit.