Per Mac UI standards the tab close X should be on the left side instead of the right. I know this sounds like a small issue but for Mac users its a constant issue every time I want to close a tab. At one point Chrome support an experimental feature that did this but they have since removed it. The issue has been sitting in the Chromium and Chrome queue for more than 10 years. Vivaldi browser (Chromium based) supports this today and it’s done quite well.