Platform, device version and operating system:
Mobile (Android), Xbox
Screenshot or image:
What you were expecting to happen, and what actually happened:
When the Dwarven Gate is ascended to level Epic or higher, you can no longer have more than one at a time in your team. Any teams where you had two have one of the Dwarven Gates deleted.
How often does this happen? When did it begin happening?
On mobile, deleted game cache and data in attempt to fix. This did not work. Note that in the Xbox version, simply deleting the team and rebuilding allowed me to have two again.
Steps to make it happen again
Unable to recreate as you cannot downgrade troops.