Murktide Regent triggers less times than it should if Doomsday is cast (circumstances unknown)

[Wizzerinus]

What is the expected behaviour of the card?

• Doomsday exiles one spell from yard and puts another one on top of the library. Murktide Regent triggers twice.

What is the actual behaviour of the card?

• Murktide Regent triggers once

Support Forum Thread

Forum Post: https://forums.mtgo.com/index.php?threads/doomsday-did-not-trigger-murktide-regent-properly.1673/

Screenshot

Please provide a list of affected cards Affects: [Murktide Regent]

Card Images

[vorpal-buildbot]

Daybreak has labelled this bug as Could Not Reproduce