When I registered this bitwarden community account, lastpass asked if I wanted to save the credentials. Bitwarden did not capture the credentials on register and did not ask if I wanted to save the credentials.
Please fix.
You posted this in the #support category (which is meant for user-to user support) , we can’t do anything about this 
If you believe this is a bug, please file it on github.com/bitwarden/browser/issues (for issues related to browser extension only ; for other apps, please use the other repos)
If you want to make a feature request, you can post in the #feature-requests.
Bitwarden can be hit or miss on prompting you when signing up for a new account. But the creator has a better solution that honestly makes more sense to do… https://youtu.be/dBPfr7Jiddw?t=2m50s