Block Edit menu out of screen

I have three screens, including the laptop one which is smaller but higher resolution than the other two.
Every now and again this results in display scale problems in every program.

Today, after hours of workins and BlockEditing (perhaps this was mostly in Rhino7) I accidently double-clicked a large model inserted as a block.
The BlockEdit window for the block editing starts above the top on my top screen and ends below the bottom of my bottom screen.
I can only stretch it sideways and cannot move it up or down.

I have a large amount of blocks with nested blocks and it seems that the BlockEdit window not only expanded the whole tree but also sized the window to the whole list. It should not, this should be fixed if it is the case.

I was able to exit by opening it in Rhino7 (luckily the model was originally in R7), look at the last block of the list and Tab my way through the list of block, plus one Tab for OK.

Thanks, N