Extension page events are sent again in subsequent notification emails

I'm watching 75 extension pages on extensions.xwiki.org. Between January 21 and January 26 I got notification emails that contained, in addition to other changes, the same more than 40 changes to extension pages. On January 27, the events stopped, but on January 28, they were back once. And now On Feburary 7, it started again. There is a wave of new changes that then repeated again on February 8 and 9, but there are also changes from 3 weeks ago again that also repeat again every day. The old changes are displayed with times like "3 weeks ago".

It feels to me like the days where I get the those emails match with one day of delay the days on which the administration application (that I'm also watching) got modified: https://extensions.xwiki.org/xwiki/bin/view/Extension/Administration%20Application#History - However, from what I can see, it only started recently.

What I'm wondering is if there is something new in the extension application that actually modifies/saves these pages but without creating an entry in the history.