Do all new FastIPS monitors have vignetting around the edges of the screen?

I'm currently on an older IPS (still 144Hz) and there is zero vignetting around the edges, but I've ordered (and returned) multiple different FastIPS monitors recently and each one of them had aggressive vignetting around the edges even when looking at it straight-on. They also all had dead pixels or stuck dirt behind the panel whereas my current monitors are very old with zero of these issues. IPS is supposed to have really good viewing angles and these new FastIPS panels were worse than anything I've seen.

Is this normal for FastIPS? Do any monitors avoid this?