New to the forum but I've an issue that I can't seem to resolve. I have a desktop PC with dual screens running. On the main screen almost every piece of software automatically opens as full screen. Out of the software I've tried (photos, chrome, outlook, file explorer etc) only paint didn't do this. More than this though, when it opens full screen the software leaves a 1.5cm gap at the top of the screen that shows the desktop behind that is clickable. i.e. I can access the desktop, create a new folder or click an icon. I've searched high and low but can't find a solution to this. The picture attached shows a good representation. Some software, when I press the F11 button, flips in and then out of fullscreen and becomes normal (e.g. Outlook), but other software doesn't (chrome, photos). The ones that don't go properly full screen then revert back to having the line.
Does anyone have any ideas how to fix this as it's driving me to distraction. I've checked if there's any untoward software installed on PC and can't see anything unfamiliar.