I noticed this after brief chat with beginner Monzonaut via PMs. I provided fresh ticket and she said it was already used. I knew it wasn’t used, and it was quite easy to figure out a pattern.
Somehow onebox that shows preview of monzo ticket already redirects and opening link directly doesn’t work.
When user clicks direct https://goo.gl/something url, ticket shows as valid.
It probably has big impact on tickets in Golden ticket thread, they look gone, but they are not!
To reproduce, click this: https://goo.gl/fdVbKl - this works
Below is same link, just in onebox - doesn’t work.