Not sure if there is an issue about this, but I think something strong that backdrop-issue could offer is auto updates for security issues etc.
Since there is semantic versioning, this could be used as a check.
There are obviously a lot of issues that are needing to be addressed here, but thought I would start the issue.

~PR by @serundeputy: https://github.com/backdrop/backdrop/pull/2307~ Revised by @laryn: https://github.com/backdrop/backdrop/pull/3753
Part of META issue: https://github.com/backdrop/backdrop-issues/issues/2018
Recent comments
there is no error, it gently renames the file
How to upload js and gz files
Could be a trivial thing like Permissions -> Access administration bar (for a role)?
User seeing admin stuff
Can you paste or screenshot the error you encounter?
How to upload js and gz files