At in laws. Helping out by doing little chores. After loading the dishwasher I found MIL taking out most of the dirty crockery and cutlery I'd loaded, so she can reload the dishwasher the way she likes it.
Yes it is her house but I find it rude and discouraging - what is the point in helping if it gets undone?
I have decades of dishwasher loading experience in my own home and my washes usually come out fine.