In version 126.96.36.199, if I have multiple beams open, and I am viewing a beam that isn't saved (either a new beam or a previously saved beam that I've changed but haven't re-saved), and I click on the tab of another open beam to switch to it, I get the error message "This analysis has not been saved. Do you wish to save it now? This will overwrite your existing design." 188.8.131.52 and previous versions did not display this message when switching between beams, only when closing beams, and it is pretty annoying when working with multiple inter-related beams at once.
The weirder part is that it doesn't actually overwrite anything. You can go ahead and switch to another beam and come back to it and the data is still there. So it just seems like an unnecessary warning dialog.