I am experiencing the exact same thing - down to the detail of trying out orca after updating.
Apart from the the alt-tab from the emacs window hanging the event queue somehow, I also notice that after starting up firefox, the very first click on the bookmarks menu results in the 'Edit This Bookmark' dialog popping up.
Both these problems smell regression, but since I also tried out Orca, which ran some script in the background, I wonder... I am adding the orca package to the affected packages list.
I am experiencing the exact same thing - down to the detail of trying out orca after updating.
Apart from the the alt-tab from the emacs window hanging the event queue somehow, I also notice that after starting up firefox, the very first click on the bookmarks menu results in the 'Edit This Bookmark' dialog popping up.
Both these problems smell regression, but since I also tried out Orca, which ran some script in the background, I wonder... I am adding the orca package to the affected packages list.