Hi, I just got the new 4.23 Unreal Engine and I am a beginer, I was trying to do something very basic as adding any component from component window to an actor inside a blueprint editor, but somehow components would not show at all. I chose different ones from the list, none of them would show. They would appear in the viewport though.
My steps were:I clicked on green button " add component ", than chose the one I want and when I clicked on it, it would show in viewport but not how it supposed to show under component window ( this way I can not do any manipulation with components, not even rename them). I am going crazy, is there just any easy fix I just don’t know about?
Can you make a screenshot of your BP Editor window? Can you try in BP Editor Menu: Window->Reset Layout? It’s not the normal behaviour what you describe 
Some pics would help. I never work like this, but I just added a sphere component to a cube and it worked fine. Have you open up the extra bit of window in the components list?:
and after:
( you can drag this bit down… ):
Guys!! thank you so much for your time to answer, I feel so ashamed, haha. Indeed, all it took is to drag little line down. I can not believe I spent so much time trying to figure it out. I feel very stupid, haha. I promise I wouldn’t post any questions like that anymore. 
Guys!! thank you so much for your time to answer, I feel so ashamed, haha. Indeed, all it took is to drag little line down. I can not believe I spent so much time trying to figure it out. I feel very stupid, haha. I promise I wouldn’t post any questions like that anymore.