After the recent major Windows 10 update after the notification that support for earlier Windows 10 base versions will cease in November, "snap" features stopped working with keyboard shortcuts.
All snap settings set to "enabled".
"Snap" still works when using the edge of the screen.
However, when using Win+Arrow the following features no longer work (simple snap to the side still does - the others do not):
no longer resizes adjacent windows & the "connecting border" between windows is missing
no longer opens the prompt with suggestions for selecting adjacent windows
doesn't allow for placing windows in 1/4 (corner) of the screen (Win+Right+Down) and the down arrow instead simply minimizes the window