The Imps not attacking Gnolls may or may not be related to a bug reported some time ago, regarding AI not attacking the creature placed just in front of it (though I can’t find that report right now). To be investigated - and we can keep this 0.73c#32 referring mainly to that.
The other two are however general, and it would be nice if they can be solved soon (one because it’s pending for quite some time, and the other because it’s kind of annoying and was introduced only now with 0.73c):
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Quantity of units wrong placed / unreadable. This was reported long ago as 0.7#71 and is now the oldest logged item in SourceForge. I’ve posted a detailed description of how these stack boxes should be displayed at the bottom of my post HERE.
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Endless wait. This must be strongly related to 0.73c#16. I guess you just discovered a loop between 2 creatures of the same speed, while I had it only for 1 creature. That means it impacts all of the same highest speed creatures from our army.