toggle-windowed-fullscreen ignoring geometry-corner-radius setting

[MeTheFlea]

I believe this is a regression since I don't remember noticing this before, but whenever I toggle-windowed-fullscreen on any window, the rounded corners I've configured for my windows become square. They become rounded again when I toggle out of the windowed-fullscreen mode.

recording_20260513_150209.mp4

Config

window-rule {
    geometry-corner-radius 12
    clip-to-geometry true
}

System Information

• niri version: niri 26.04 (Nixpkgs)

• Distro: NixOS 25.11 (Xantusia) x86_64

• GPU: AMD Radeon RX 9070 XT

• CPU: AMD Ryzen 7 9800X3D

[Sempyos]

Intended behavior as per the recent release:

[PancakeTAS]

This is hardly a fix... I use windowed fullscreen to get rid of the browsers tab bar (to get a sort of PWA-feel), and by the looks of things @MeTheFlea is doing the same thing.

The whole point of windowed fullscreen in my eyes is to have an ordinary window which thinks it's in fullscreen.. why should this square the corners?

@Sempyos Please reconsider this option & reopen

[Sempyos]

I will note for browsers you could probably run them in their respective kiosk modes, you are more than welcome to make a feature suggestion discussion or just revert the commit in niri that added it on your own local branch

[YaLTeR]

I think maybe I should make it still use the set geometry-corner-radius if clip-to-geometry is true

The whole point of windowed fullscreen in my eyes is to have an ordinary window which thinks it's in fullscreen.. why should this square the corners?

Because if you don't use clip-to-geometry then the window becomes square, so the corner radius now reflects that to have correct looking borders

[TonioGela]

I will note for browsers you could probably run them in their respective kiosk modes, you are more than welcome to make a feature suggestion discussion or just revert the commit in niri that added it on your own local branch

+1 a thousand times into reverting this or in making it respect the clip-to-geometry rule