Well ... could be your just standing too close ... happens at an IDOC ("best loot" all on a couple of tiles)
Does it prevent you from moving the window to the side ... and continue picking up loot ?
the "dropper" is kinda wasting time ... ie .. NOT picking up loot ... to keep ... maybe some .. but the stuff he's dropping in the window ..
Certainly a waste of time ...
What happens when you cancel the window ... items go back to the ground? or ... back to his pack?
One item to open the window then >he< cancels?
whatever ...
Sure ... maybe its "physical griefing" ... to SAVE TIME which is what he might be wasting Of Yours ...
draft a page note ... that you can add his char name into .. like:
targeted player, >char name< keeps opening trade window to block my screen, I have requested that it stop(be sure that you do), it has not. Please help.
IF it happens again, and having your draft handy, edit the name in, help option, physical harrassment, (read AND) follow instructions ...
play on ...
No need to threaten, or get drawn into Making a pageable offense on self ... submit the page ... go back to looting ...
You have more time ... to focus on your looting ..whatever happens to him ... doesn't really matter ...
YOU got more time to loot