Fixes for mistakes found during the release process

[kratman]

Description

Minor fixes that are on develop, found during the release.

I also found some changelog errors, but I did those directly on the release branch and they will be addressed in a sync PR post-release.

Key checklist:

• No style issues: $ pre-commit run (or $ nox -s pre-commit) (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all (or $ nox -s tests)
• The documentation builds: $ python run-tests.py --doctest (or $ nox -s doctests)

You can run integration tests, unit tests, and doctests together at once, using $ python run-tests.py --quick (or $ nox -s quick).

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.45%. Comparing base (ba39170) to head (b77a8cc).
Report is 211 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #4291   +/-   ##
========================================
  Coverage    99.45%   99.45%           
========================================
  Files          288      288           
  Lines        22091    22091           
========================================
  Hits         21971    21971           
  Misses         120      120           

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