On the Dashboard > Extensions > Favorites page, we added Akismet 4.1.3 to favorites, and then two newer versions in incremental order over it.
In that case, the version number in the “Version” column was updated properly.
However, when we added it in reverse order (4.2.4 > 4.2 > 4.1.3) the version number did not update. This will be addressed.