Tool Tip Widget in Behavior deactivate

Hello, I am a beginner developer who started learning Unreal Engine through AI. My question is this: I selected the Text widget in the UMG Designer, but the Behavior ➔ Tool Tip Widget dropdown menu in the Details panel on the right is completely disabled (grayed out) and cannot be clicked.

I am using Unreal Engine version 5.7.4. I have completely cleared the Tip Text field and unbound it.

I have set Visibility to Visible.

Even when I created a new blank project with nothing in it to test, it remains disabled in the same way.

I have tried the following.

Have a great day everyone. Thank you.