Blender 2.8: 2D animation tab "suddenly" lose draw/grease pencil mode when adding object

I know the cause for this issue is vague, because I myself don’t even know why it happens except for when go to modelling and create couple of object and env, when I came back to 2D animation tab, I can’t use the drawing tool nor selecting the stroke I created.

Ok so I found a solution that got my draw mode back when I select the small thingy, not just deselecting the object.image