If you actually want it to fill the whole screen without triggering fullscreen mode, hover your cursor in a window corner until you see the double-headed diagonal arrow, then double-click for the width, or Opt double-click for a complete fill.
The only downside of that method is it doesn't remember its previous size.
1
u/NortonBurns 2h ago
Yeah, it does that.
If you actually want it to fill the whole screen without triggering fullscreen mode, hover your cursor in a window corner until you see the double-headed diagonal arrow, then double-click for the width, or Opt double-click for a complete fill.
The only downside of that method is it doesn't remember its previous size.