Rhino minimize issue

Hi Guys
I m having this issue when i try to move a window it automatically minimize it to just a bar ?

its either totally minimize or maximize, i cant have a re-sizeable window , like this (chrome for example)

this has never happened before.

when it minimizes, can you drag it a little larger? if so-

close rhino-
right click on the launcher icon and launch as admin.
minimize it, then drag it a bit larger or to whatever size you prefer.
then maximise it and close rhino using file>close

restart it normally and see if it behaves now.

its working !!! thank you so much