UI is in a frozen state upon launch.

[virtuallyunknown]

Greetings.

I am new to Rust and Iced, but in my research on how to create an OSD (on screen display) with Iced, I found this library, so I decided to give it a try.

So I cloned this repository and ran cargo run -p counter, but pretty much all the examples aren't working as intended, the UI seems to be in a frozen state. The video below demonstrates the issue.

The buttons are functioning, the internal state changes, however the UI itself is frozen. With the counter example, moving the panel to the top or to the bottom doesn't fix it, and only when you move it to the left or right then everything starts to work properly.

video.mp4

I have no idea what the issue is, but I'd be happy to provide details about my system or anything that can be useful here. I am using Rust 1.94.1 (e408947bf 2026-03-25) with Niri Wayland compositor 25.11 (b35bcae).

[Decodetalkers]

I do not know. even in my niri, it works as normal..

[virtuallyunknown]

Is there any additional info I can provide in order for this to be figured out and fixed or it's a dead end?

I am on NVIDIA 4000 series graphics card btw, not sure if that's related but I wonder if your system is using one too.

[virtuallyunknown]

So, just want to leave a quick follow-up here, but I asked AI to help and analyze the issue because this is way over my head, and it gave me a workaround along many other things.

If I run WGPU_BACKEND=gl cargo run -p counter then the problem goes away, and everything seems fine (except that the background is black instead of transparent).

It also identified a few issues, a bug with Niri+Nvidia combination (and why you might not be experiencing this problem) and some other issues/suggestions, the whole report is quite long but here is a small part:

Either way, I don't know if you're interested or have time to deal with this, but I just thought I'd report this anyway.