XWiki upgrade leads to notifications appearing

myxwiki.org was upgraded to 10.8.1 today. I upgraded my wiki there at 13:03 (massol.myxwiki.org) and found that there were new notifications appearing.

I can see 2 issues with those:
1) I don't think we should list pages modified during upgrades, or they should be grouped together in a single entry. It could also be a filter to let the user decide if he/she wants that or not.
2) I see that the author is "Admin" (https://massol.myxwiki.org/xwiki/bin/view/XWiki/Admin) or "Guillaume Delhumeau" which is wrong since I did the upgrade with user "xwiki:XWiki.VincentMassol".