Did you try with full numbers instead of decimals?

Yes, I've tried to round numbers too, the same thing, but on reload error disappears and no longer happens unless I close window.

I've noticed one weird thing too that while running with next build / next start... it doesn't appear at all. Could it be related to more aggressive cache handling or something like that?

I've managed to find an issue, kind of, I've used router to push to server component where it fetches data based on router params. Then, pass it to client component to display it. I've removed it and no longer shows this error, while smaller <div> with data displays just fine.