going to the litter pan to have a dump, then immediately kicking it as far from the pan as possible...

Mine do exactly that. Right up to the leaving a trail of litter in their wake. I spend more time sweeping than I do sleeping it feels like!

I am slightly lucky in the respect that when they kick the poo out it doesn't trends to go too high or too far. Except for sometimes when we don't know and then find a fossilised halls cigar some days or weeks later.

They can hold grudges for a damned long time!!