I have a monitor attached to my laptop. In the develop module, when I use the second screen, Loupe Mode, I click on the image to enlarge from 'Fit' to '1-1'. That works. But when I click again to reduce image size to 'Fit' it often does nothing, staying at the enlarged size. Sometimes if i click around the image edge, the flat gray area, it will go back to fit in the window. Mostly it doesn't work and i have to click on Fit lower right hand corner.
please excuse if this has already been mentioned elsewhere.