During prerelease testing for Beta 2.1, Sherlockkat encountered an apparently bug with the new item gallery info feature, being unable to Esc out of some opened item info (while in keyboard mode), quite possibly as a result of Alt-tabbing out of Cogmind (borderless fullscreen) and back in while info was open.
Neither of us could repeat it, so this bug is still in there somewhere... If anyone encounters this and can offer more possible details, or, even better, find a reliable sequence of steps to reproduce it, that would be great.