But note that there are two “show context” buttons. In principle, if I am on a broken version I should be able to visit the parent on the originating node & possibly side-step the bug.
I am not sure if I can follow you but this bug affects both “show context” and “show parent” button on broken instances.
Also note that I would still like a way to block CF instances
I am afraid that such a measure would only be possible for admins by blocking traffic for domains that resolve to/IP ranges operated by Cloudflare.