There is a bug in Japanese Wikipedia where most edits were tagged with "Advanced mobile edit" even though they were not done in mobile mode (or if that matters, not even on a mobile phone). A sample can be found here: oldid=73696871 Can someone help have a look?
Topic on Talk:Reading/Web/Advanced mobile contributions/Flow
@AHollender (WMF): Adding a ping just in case.
I've filed phab:T229727 as this is also happening on es.wikipedia.