Using right-hand-side of screen and left-hand-side of screen to better illustrate the question. Of course, it works identically in reverse as well.
On Windows 10 (I believe since Windows 7), you can snap a window to the right hand side of the screen by dragging it to the right edge. In doing so, it occupies exactly half the screen, and fills top-to-bottom.
However, when there are other windows open - if these aren't already snapped to the left hand side of the screen - you are given a selection of the various windows you have open. Selecting one then fills the left hand side with this window.
Often, I find I want to have many small windows open for various tasks, but stick something else onto the right hand side without disrupting the other window's layouts.
Is it possible to disable this selection, so that dragging a window to the right hand side still snaps, but doesn't then prompt me to fill the left side?