Ok I have figured out exactly why whirlwind attack now bugs for me. It is whenever I do any sort of action in the same round as the whirlwind attack. If after I complete the whirlwind attack, I don't press anything and wait for the PC to attack again it never bugs out.
Whereas if I do some sort of action before I do the next attack/end the round it will bug out!
This is good as although it is not a fix, I am now able to use it without triggering the bug! Also if there are any programmers around, it may help to understand the bug and fix it
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ShaDoOoW wrote...
Its said, toggling that steath/search mode will fix it, but never tried that actually.
I've tried that and it doesn't work. I had a save that had hit the bug and I tried everything I could think of/find on the web to no avail...