(May be relevant to issue at http://ludeon.com/forums/index.php?topic=1448.0 though I'm running a completely unmodded version and I've checked the save file to see if their skills were 'too high' and they were not, though symptom sounds similar)
Unknown cause - saved game currently stuck with this issue.
A pawn is currently standing still and failing to do anything naturally, when the pawn is clicked on the pawn selection information partially comes up though the overlay freezes, menus cannot be accessed etc.
One thing to note is that the map can still be moved about, zoomed/unzoomed and the game can be paused/unpaused, though nothing is selectable or otherwise able to be interacted with.
Here are some images to show which pawn in question as I have attached a compressed copy of the save game I have the issue with.
Zoomed out to show where the pawn is:
http://i.imgur.com/io9OTNd.png
Zoomed in to show the selected pawn and its direct surroundings:
http://i.imgur.com/XnpMBdj.png
If there's any additional testing you want me to do on my end let me know (obviously I'll be trying to reproduce the error as I'm now forced to revert to an earlier save game)
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I've fixed the save for you and attached it below.
The problem was that he was trying to clean up some blood that wasn't there.
I'll post this on the bugtracker.
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Oh wow, thanks!
I can confirm that I had this bug multiple times, but for me it always happens when raiders attack and normally it would be one of the raiders that causes it.
Only one time it was one of my pawns that hang.
The raider that causes it does not hang though, it proceeds to attack normally.
Its easy to reproduce when it happens, click on raider or pawn and the UI vanishes.
itchy reported it on mantis.
http://ludeon.com/mantis/view.php?id=322
The workaround that I use for this bug is to double click a nearby working pawn. It should select all the pawns on screen. Click the button to draft them all as a group. Then give them all a move command. This should free the affected pawn. You can now release them from draft and use them normally again.
It did end up in Mantis twice though - the second one probably has less definition but it might be the same issue.
http://ludeon.com/mantis/view.php?id=331