Anim notifies trigger repeatedly/every frame when using an animation mode track set to Use Anim Blueprint in a Level Sequence

The anim mode track seems to cause the sequence to retrigger notifies every frame.

1. Create a new blueprint class inheriting from AnimNotify
2. In the notify, print some text in the Received Notify function
3. Add the notify to an animation
4. Create a level sequence and add a skeletal mesh to it
5. Add the animation from #3 to the mesh
6. Add an animation mode track to the mesh, set it to Use Anim Blueprint
7. Make sure the anim blueprint has a Default Slot setup to receive animations from the sequence
8. Play the sequence

RESULT

Every frame the notify will print text, instead of just once. Removing the Animation mode track will resolve the issue. You may need to open the output log to see this in the editor.