Updates recently have had "test versions" before their actual release, to fix bugs and have community feedback on features. You had downloaded a test version of 0.8.1 prior to it fully releasing.
In that case would it have said "test" in the version number? Because there was nothing like that before I updated just now.
It should say it is a test on the itch.io page, but the actual file name and version number in-game looks like any other normal version.
