@duncan and I have found a couple of UI issues (either missing patches from the original rebase, or broken in the migration to 91.3esr).
First up, we're not using the right icon in the identity block:
![image](data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==)
Icons are visible in the hamburger menu for 'New Identity' and 'New Circuit'