https://bugzilla.wikimedia.org/show_bug.cgi?id=69315
--- Comment #6 from Merlijn van Deen valhallasw@arctus.nl --- OK, that's https://github.com/wikimedia/pywikibot-core/commit/6db4ab1ed6ae65940d0ef9978... Merge "Bug 69315 - cs timestamp not supported", so that suggests the issue indeed is still there.