Your edits note's passive aggressiveness isn't polite nor required. But that aside, information regarding the patch notes for these pages were most likely obtained automatically through an application I wrote as per commented on the User blog page regarding the patch note history project. It appears there is indeed an error within the application about hotfixes here and that has since been corrected. I did do some tests on pages to see what was outputted and checked it by hand it came back fine to me, so it appears the pages i hand-checked had either minimal updates to them so it wouldnt appear in certain places or other issues have arised. Thanks for bringing that to my attention.
In the event these pages patch history weren't actually acquired through the use of the program, then the 9.6 update may have been an accidental typo that I didn't catch from using the numpad to enter the number manually.
As for including everything, I did my best to do that, if anything was missed up to patch 19.5 (if that was indeed the version that was latest at the time. I do not personally recall which 19.x version it was) then I take no blame other than it not having been found through my methods of CTRL+F and searching for keywords like the item name, general broad changes to items and the like. As I am only human and I am sure some things may be missed.
Edit: Upon looking at it closer, it appears the edits most likely were from the program, as from update 9.6 onward it was using a newer system to indicate the version number (IE: |update number =...) and if it was a hotfix (IE: |type =fix), prior to it it was using normal header tags to indicate the version number and if it was a hotfix or not (See "==Update 6.3==" and "==Hotfixes 6.3==") and this wasn't taken into consideration that this was the case. Again, changes have been made to ensure the issue shouldn't arise again.
As for what version I was using, it appears the linked blog post has that file updated to 188.8.131.52 which is most likely what i was up to at the time, if any patches came out afterwards then it wasn't updated and the file i was using was out of date and the newer stuff wouldve been missed