Pasting timeline components into another actor and then choosing "cancel" on fix self context function references results in a broken state

upd. Regression was checked on //UE4/Release-4.26 CL 15973114, issue was reproduced. Regression - No

1. Create ActorA and ActorB of type Actor.
   2. Add a new function and TimeLine node to ActorA.
   3. Copy the function and TimeLine node created in No.1.
   4. Paste them into ActorB.
   5. Press Cancel to close the displayed Fix Self Context Function References
   6. TimeLineComponent is added to Variables->Components

If you click cancel, nothing is added except a Timeline reference component under Variables (even though no Timeline node is actually added).  The resulting component can't be deleted from My Blueprints (a normal timeline can't either, you delete those by selecting the node, but without the node in the graph to select you're stranded)