It's unacceptable to sit on a privacy affecting bug like this for 15 months.
This continously repeated bullshit that the source of the problem lies elsehwere is tiring. They're knowingly using a library with a security bug, and they're doing:
1. Nothing to get the devs of that library to fix it
2. Nothing to fix the library themselves
3. Nothing to warn their users
4. Nothing in their local application to protect their users.
This is not how secure development works.