Object rezzing 1m up in the air

What might cause and object taken from inventory and rezzed in-world, either on the ground or on top of a prim, to do so 0.74m above the surface?

There's no position setting in the script at all, and though there is some rotation of a child prim (via llSetLinkPrimitiveParams ()), it's above the level of the base prim at all times.

Both the base prim - as in the one that should touch the ground (it's also the root prim) - and the child that occasionally gets rotated are sculpties, but using Advanced/Rendering/Info Displays/BBoxes shows close-fitting bounding boxes and gives no indication of anything that might cause this.

The height of 0.74m bears no obvious relationship to anything, either.

Thanks.

Check the bounding box size on the root prim if it is a sculpt.

oops... just saw that you checked that already... lol

nvm

cut prims? the sim will calculate the bounding box on rez from the uncut object size, and then update it with the cuts as it gets that information... I have a chair with this exact problem

Curiouser and curiouser... it's none of the suggestions above - and thank you for those, but...

On the *second* change of owner the effect seems to go away. It's as if the object has a persistent rez offset that fades away eventually. I wonder if it could be something to do with attachment positions "leaking" through into on-the-ground rezzing.

Unfortunately I've been working in a bit of a rush, so I haven't had time to investigate properly yet.

I've seen this before with sculpties. Got a couple of sculptures that rez about 20m off the ground every time I drag them out of my inventory. Freaks me out every time - figuring that the sim ate them - until I remember to look up.