Same problem with me. I am running an Acer Aspire 4935 running Windows Vista (french keyboard) and can't get Alt+O to function in full screen.
A trick is to reduce Stellarium, then click on the Windows top right "maximize" icon : Alt+O will show the pop up.
Therefore I believe this is a problem of focus of the pop up.
Same problem with me. I am running an Acer Aspire 4935 running Windows Vista (french keyboard) and can't get Alt+O to function in full screen.
A trick is to reduce Stellarium, then click on the Windows top right "maximize" icon : Alt+O will show the pop up.
Therefore I believe this is a problem of focus of the pop up.