Hi @verpag, you're not the only one, but so far I haven't seen how it happens
You can get it back like this: click View -> Show Toolbar in Full Screen Mode in the menu.
I am sure that using 1 or 2 would work with MacOS if I wanted to use the advanced shortcuts. I am not interested. Most of the time, I click on the tab to select it. If I have a lot of tabs, I can drop down the list of tabs and select one from there.
