Cant Click Anything in the Viewport

Hi there, Im new to the Unreal Engine, but for some reason I am not able to click any controls in my viewport, evreytime I click anything, it doesn’t perform the action, just brightens the tabs bar slightly and dims it again. Any idea what it might be?

I had this happen before so I restarted the editor and worked fine. If that doesn’t work you may want to reinstall your current version of the editor and see if it has any effect.