Hi guys i think i might have solved it, at least a provisional solve, havent really tried to go further, but basically you can just add the rig; sorry i cant be detailed, but i’ll provide screenshots:
First Sequence [It works as intended Control rig shows and works]
Second Sequence [Stops working and showing the control rig but skeletal mesh it’s still added]
Partial Solution
Click on add a track in the skeletal mesh
Click on [Control Rig → Control Rig Classes → [Control Rig for your skeletal mesh]]
Et voilà | Result
Im not an experienced developer, i just encountered this solution and im not sure if it even works i just hope i can help this post 