[gregmac]

I don't understand the continued obsession with "grouping" application instances together like this (Windows and macOS both do this, in different places and different ways).

Dear OS: If I have multiple instances of an application open it's because I'm doing different things. If one is a text editor, you should not act differently depending on if the other one is a PDF viewer or another text editor.

Many applications already have their own "grouping", usually called tabs. Web browsers being a really obvious one, and where this application grouping is the worst. Half my "apps" are really just web pages.

Grouping the window where I'm testing the web application I'm currently coding with the IDE where I'm working on the code would make way more sense than grouping it with my web-based email client... yet here we are.