Can you send more details? Nimbus was disabled, then enable automatically?
Firefox developer Edition: 54.0a2 (2017-04-13) (64-bit)
When Firefox consumes lots of memory I disable addons manually. But Nimbus is reenabled on every update.
Strange. Problen only wtih Nimbus?
More than 10 addons working fine.Another problem was with 'View Cookies' addon. I removed it but every restart it was reinstalled. I have notified its developer as well.
If it is a Firefox issue, let me know. I will notify them.
Definitely a FF issue, problem has not occurred in the recent 3-4 updates. Thanks for your support.
Customer support service by UserEcho