I was just about to report this same behavior on my TT! (Running > latest MiNT and XaAES from cvs). When Thing shows a dialog box, I > cannot press any of the buttons on it until I switch to another app > and back. It doesn't actually freeze, I can still move all the > windows (and the dialog) :) around.
I just tried to reproduce the same with QED but it didn't happen > there. For the moment I haven't got much else installed to generate > dialogs with. But so far it seems for me that only Thing is affected > by this (1.27), even though the same version never displayed this > behavior before. (Until upgrading to cvs I was using the released > versions of MiNT and XaAES that came with EasyMiNT).