Replacing non-sequence asset on asset player produces false "Cannot replace" message

When attempting to replace a non-sequence asset on a player node (such as blend space or aim offset), the user will see a "Cannot replace with a sequence player" message, even though they are able to do this.

1. Open QAGame in editor.
2. Open QAPawn_AnimBP.
3. From the Asset Browser, drag RifleAim_Blend into the Anim Graph.
4. Drag ThirdPersonCrouch and hover it over the BlendSpace Player node.

RESULT

A message will appear saying "Cannot replace with a sequence player", though the user is actually able to replace it.