This is another request that will save workflow time. I was just trying out B2 on my laptop and realised that there are buttons missing that used to be in 1.8, see the screenshot below
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The 2 buttons highlighted by the 2 red dots are taken from the "Preview Screen" when opened in full screen. These buttons are not missed when working on a desktop with 2 monitors but these buttons are helpful when working on a machine with only 1 monitor and you don't have continuously open and close each preview.