That button was very useful for me. Is it possible to restore it? Any hints or docs on how to do it? Where can I see the code for the other buttons on the PlatformIO Toolbar? This would help me to be able to add the one I miss.
While the test icon has been removed from the tool bar, it still lives!
Click the alien’s head on the far left toolbar, when the list appears, click on “Advanced” to open it up. You will find the less frequently used options there - test is one of them. The verbose build and upload options are to be found here as well - which I find very useful.