We have a user experiencing multiple instances where attempting to publish a post gives this error

Application request limit reached (code 4, subcode 2207051) 'action is blocked - We restrict certain activity to protect our community. Tell us if you think we made a mistake.'

but it appears that the post actually publishes. This causes a strange state in our app where the post appears has having failed to post in one view, but succeeded in another view.

Has anyone else experienced this or does anyone know how to avoid this error?