We’re more than happy to provide any support you need to resolve any issues that you have with installing or maintaining a Discourse installation if you follow our official installation guide.
However, we don’t support the Bitnami installation because there are too many variables that might differ from our recommended installation guide.
We don’t use the “dirty” suffix in any of our releases, and I believe that that’s something that only happens if you’re using the Bitnami installation. So, if that showed up on your site before you updated, then it’s a pretty clear sign that you didn’t follow the official installation guide when you set up that site.
Further, the issue you’ve described is not new and was either fixed per this commit or another commit that’s related to that.
So, please ensure that you’ve followed our official guide for the Discourse site you’re having trouble with and ensure your Discourse installation is up to date.
If both these condition are met, and you’re still facing the same problem, please post clear reproduction steps as that would help us fix the problem a lot quicker.