Not a bug: a feature patch that's been part implemented.
In the last couple of weeks there's been news on DNS privacy. I was JUST about to submit a PR for a bunch of Unbound options and found someone beat me to it.
I've covered a few options beyond those in Github, and looking at the code history I honestly like how I've done it - dropdowns rather than checkboxes, and merging all Unbound security/privacy options into one place (services_unbound_security.php, taken from the advanced page). It looks good, and the help text is helpful.
So I'm putting it here for a look, even though it partly doubles up on existing PRs - it also partly doesn't double up and you might like the rest.
I don't like good work to go to waste. Attached is a diff against 2.4.3-RELEASE (amd64) built Mar 26 18:02:04 CDT. Could someone try it out and see what, if anything, is liked and worth PR-ing?
In case the patch file has any issues I've also attached the full text of all 5 files as well.
Should be self-explanatory. Apply diff to 2.4.3 and visit unbound config pages.