There are many security situations where 3rd Party Apps are supplying their own specific browsers.
Gambling blockers, and very soon SafeToNet which is an innovative child protection software. (A work in progress)
Unfortunately 3rd party browsers are not working as intended via 1Password.
Are you able to allow users to chose their browser of choice and to ensure it works as intended with your software.
For reference Safari is deleted or blocked and the 3rd party browser is the only one the phone/IPad/Mac user is permitted to use.