Likewise, the "x" button to close tabs is hidden until you hover over the tab. This means that I'll go to try and select a tab and when I move my cursor over the tab and click, an "x" has just appeared under my cursor and I close the tab instead! Whoops, I guess I should have known better than to aim my cursor at the right portion of the tab.
It feels like they're trying to make it seem more like VSCode, but it's just poor UX from where I'm sitting. Plus, as VSCode gets better, I'm finding less reason to keep paying for the JetBrains suite.