Huh, this is indeed weird. You should have been pushed to The%20Last%20Court%202.2/The%20Last%20Court%202.2/index.html, which is the version I am playing right now on the itch.io public version.
Perhaps your browser kinda "froze" the version you were playing on and didn't update? Just to be sure, you did NOT download anything, did you? Because the offline version can also be played on a browser, but it does not get automatically updated.