Feedback Normal behavior or bug?

Its been my experience for years that sometimes you can't drag & drop a qualified game object with the appropriate components on it to some inspector fields. Up until Unity 2019.2.1f1 I thought the object had to come from the asset folder in some circumstances, while in others it did not. One thing is for sure though, for a long time I haven't been able to browse the assets from the pop-up box, instead I've had to drag and drop or do something sort of wonky.

Its reached a point where I cannot drag and drop or add a reference to a script in any use case. Drag and drop has ceases to work as it should, the pop-up box fails to show anything, etc.

I'm not certain this is a bug or not but I think it may be...