(03-14-2014 08:23 AM)Sarena Dreamscape Wrote: I read a couple of older posts about cats walking and falling through walls and floors, which sounds like a lag issue if the person was seeing it happen, as I haven't witnessed this myself.
The issue you're describing is the same as those old posts and is not related to lag.
As you noted, it is related to changing to be physical when moving and non-physical when standing still (but changing poses).
The solution is to turn off Walk/Run and set a fixed Pose, then position your cat and Set Home when you're done.
Since it cannot walk/run it never becomes physical. Setting a Pose prevents it slowly "wiggling" into and through other objects. Either would solve it, but I recommend both, just to be sure.
BTW, I submitted evidence of this, and researched it deeply, WAYY back in mid-2011. It's been a problem for KittyCatS! since Day Zero. There are technical fixes. None are pretty (to a programmer); some require a complete change to how cats move and pose; all cause lag, possibly an unacceptable lag. So I would expect we will never see a fix.
A work-around, which usually, but not always, works is to add invisible collision prims a bit above/below/inside/whatever the prims which cause you problems. This increases the probability that, when the cat rolls over, stands, sits, whatever, it won't wiggle past BOTH surfaces.