Update to prior review--problem was PersonalMenu extension Rated 5 out of 5 stars
I had to return to amend my earlier comments. I eventually ran into similar troubles with other extensions, particularly using the 3.5 RCs. It is now clear that Personal Menu is the addon that isn't playing nice, and not InvisibleHand. Being the first time I saw the problem, I did not consider that it could have been a longtime extension already installed. Mea culpa.
Anyway, I reinstalled InvisibleHand, and it's working just fine now.
And thank you to the developer for responding to my earlier comment. Looking forward to continued development.
We're fixing it.
Thanks for the feedback. We've replicated the problem and we're now working on a fix which we'll deploy asap.