A workaround is to set the environment variable MOZ_ASSUME_USER_NS=0.
You can run it as: env MOZ_ASSUME_USER_NS=0 /home/bob/Downloads/firefox/firefox --name=firefox-nightly %u
A workaround is to set the environment variable MOZ_ASSUME_ USER_NS= 0.
You can run it as: USER_NS= 0 /home/bob/ Downloads/ firefox/ firefox --name= firefox- nightly %u
env MOZ_ASSUME_