The current version of Bitwarden straight up doesn't work in Orion [0]. I ran into this yesterday when setting it up for the first time. Wasn't a great first experience as it's literally the only extension that is a deal breaker to me.

I'm still giving Orion a chance for now... I just installed a slightly older version that works.

[0] https://orionfeedback.org/d/10197-bitwarden-hangs-on-load