It's not about taste, It's about function. Rounded edges are like lube. The tab is also disconnected from the window, which makes if very difficult to navigate to what tab you have open. It always made sense to have the tab connected with the window ...
Too many rounded corners. Whoever at the UI/UX team that is addicted to circles needs removed from the department, immediately. This is terrible to look at. The tabs are no longer connected to the tabs, like a file folder. The visual flow is complete...
