For joining two windows in either vertical or horizontal direction, I hover over the window edge and Rclick --> Join Area.
This works if the windows have the same width respective height (regarding to Blender Wicki). Nothing special so far.
But for example, if I have divided a window horizontally into two, but want to now join one of them vertically with an adjacent window, blender seems not to let me. I know that the width of the two has to match, but regardless how much I try to eyeball the corners to match, the window still ‘glues’ to the horizontal neighbor.
Is there some trick / Keyboard combination etc. I missed so far to ‘redirect’ the window join priority?
Cheers for any help