STABLE version -- 4.2.10.171

[cb-user]

It's not exactly new, the rounded Material design has been in Chrome (and Cent) since Chromium 68/69 in mid 2018.

I think it was asked at the time if the devs could go back to the old square design but they said it wasn't possible/too difficult. Fwiw, I don't like the round design either but it's something we probably have to live with until Google changes it yet again...

I remember this. The question was rather rhetorical. :-)
360 Extreme Explorer continues to come out in its classic rectangular version.
Yes, and Slimjet, too.

Because of this, you have to use version 3.6.8.99 or 3.7.2.33 (in which you can return the classic design). Or use another browser. Unfortunately. :-)