Unreal engine 4.20 problem


Hello everybody. I´ve been using Unreal Engine 4 for a wile and suddenly this is happening to me. When I open the content browser at the start

to search for my project or start a new one, it sorounds certain spots with a dotted line and dosen´t lead me select anything else. After fighting with the first screen and being able to open a new project it happends to me also in the main ui of unreal.
Im posint a photo of how it looks in the content browser, dose any body else have this problem? how do I fix this?

Thank you in advance and sorry for my english