So it's an outdated build, yet it gets frequent updates. That just makes it even weirder?
It's not an issue as such, it only takes a few seconds, it just seems weird. Since nothing is fixed. The latest updates mentioned on the steam page are more than a year old.
I used the proton version earlier, that's how I found out about the graphics issue. But for some reason my proton version began to stutter? So I went back to native Linux.