[official response requested: Chest Mimic: Why you no work?

I brought this up in the main forums here: https://www.shroudoftheavatar.com/f...o-summon-chest-mimic-pet.130275/#post-1063706

Some folks had the same experience that I did. Not that the team has copious amounts of time and are just itching to figure out what happened to my pet Shmoo but if any of the devs feel like they need to do something different from what they are working on, I will entertain the community with stories about the misadventures of Caska and her unwilling sidekick Shmoo.

1. Title: Chest Mimic pet is too Smart to respond to the Founder's Whistle
2. Reproduction Rate: 100%
3. Blocker? No.
4. Details: when I try to summon my pet I get the message "Your call was unanswered" and "You used sommoning but hit nothing."
   
5. Steps to Reproduce: Log in as a founder avatar. Equip the founder's creature call. Wonder "Why?"
   
6. User Specs: Microsoft Surface Pro (2017 version) running Windows 10 Insider Build fast ring. 16 GB RAM.