I have been going through the Plugin lists on all my client sites, looking for Plugins that haven't been updated by Plugin Authors. Every time we update a Plugin on a website, we note the date in our documentation. In the process, I have noticed a strange disagreement: on WordPress.org Plugin repository, Last Updated Date doesn't match with the Plugin's Version Update Date.
For example, in our documentation, a plugin named Category Post shows that the last update to version 4.9.13 was done on 9/29/2021. The date here would cause this to be marked as a plugin that might need to be replaced, because it looks like it's a plugin that isn't being maintained.
But, when I went to WordPress.org (on February 2023) to check on the plugin, it says Last Updated: 1 month ago, to that same version number (4.9.13)!
Any clue as to what is happening?