The UX is mediocre due to their refusal to add GUI elements we've had since the 80s because the product can't be allowed to compete against Visual Studio.
I've used Visual Studio before, and one thing that annoys me about VS Code is that I can't just drag a tab out to a new window and have it be connected to the same project or session or whatever.
Even if one uses "new window" and moves the tab, things occur such as it not picking up imports, etc.