The extension is called Burn-My-Windows and I always look forward to it when booting into GNOME because it feels so ✨fancy✨

Unfortunately not :/ But I do have rainbow-gradient window borders.

I suppose you’re mainly concerned about LibAdwaita-Apps?

I was surprised to learn that

• a) macOS only recently added Left/Right-tiling natively (without extensions, just like GNOME does)
• b) they leave gaps when you tile them so that it looks like you messed up the tiling somehow