#405 (Sep 12, 2019, 11:14:13 AM)

1. add failing test for issue #1432 (commit: e299644) (details / githubweb)
2. fix KeySet updating of already string-accessed keysets (commit: c839f4a) (details / githubweb)

GitHub pull request #1433 of commit 2ef2718c3e8176b646906a1f06176a5e0483bde1, no merge conflicts.