All automations become 'unavailable' (disabled, cannot edit etc) once adding any new automation via blueprint

I have a working setup with many automations working as intended. I have recently acquired an Aqara Cube, and decided to use a blueprint to kickstart some automations. Blueprint adds without issue, everything appears normal. I can begin to create automation from blueprint, enable a trigger, select the Aqara Cube as device, but the actions field flashes briefly and greys out (I cannot select an action). As soon as I do this, every single one of my other unrelated automations disable themselves.

What I’ve done:
Checked the config with Settings:->Check Configuration (no errors)
Restarted the automations via settings (no change)
Opened up the automations yaml and deleted the automation for cube, then restarted (all normal)

Assuming this was perhaps an issue with the blueprint, I subsequently tried 4 other blueprints (all exhibit the same behaviour).

Creating new, unrelated automations from scratch work as expected.

Version core-2021.12.7
Installation Type Home Assistant Supervised
Development false
Supervisor true
Docker true

What could I be missing?
Thanks!

Update:

Removing and re-adding the cube to my zigbee devices appears to have been the solution to this strange behaviour. Automations now behave as expected when adding them.