In topics at ruwiki [[https://ru.wikipedia.org/wiki/%D0%A1%D0%BB%D1%83%D0%B6%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F:%D0%92%D0%BA%D0%BB%D0%B0%D0%B4/Quiddity_%28WMF%29 |my contribs]], are not showing up, if I select the appropriate dropdown menu item of a specific namespace, e.g. [[https://ru.wikipedia.org/w/index.php?limit=50&tagfilter=&title=%D0%A1%D0%BB%D1%83%D0%B6%D0%B5%D0%B1%D0%BD%D0%B0%D1%8F%3A%D0%92%D0%BA%D0%BB%D0%B0%D0%B4&contribs=user&target=Quiddity+%28WMF%29&namespace=4&tagfilter=&year=2015&month=-1 | namespace 4]] (edits from March 26 should be visible there).
Second, slightly different example at hewiki - [[https://he.wikipedia.org/wiki/%D7%9E%D7%99%D7%95%D7%97%D7%93:%D7%AA%D7%A8%D7%95%D7%9E%D7%95%D7%AA/Quiddity_%28WMF%29 |my contribs]], for which the older edits do show up in [[https://he.wikipedia.org/w/index.php?limit=50&tagfilter=&title=%D7%9E%D7%99%D7%95%D7%97%D7%93%3A%D7%AA%D7%A8%D7%95%D7%9E%D7%95%D7%AA&contribs=user&target=Quiddity+%28WMF%29&namespace=5&tagfilter=&year=2015&month=-1 |namespace 5]], but not the new ones (from last week) in [[https://he.wikipedia.org/w/index.php?limit=50&tagfilter=&title=%D7%9E%D7%99%D7%95%D7%97%D7%93%3A%D7%AA%D7%A8%D7%95%D7%9E%D7%95%D7%AA&contribs=user&target=Quiddity+%28WMF%29&namespace=3&tagfilter=&year=2015&month=-1 |namespace 3]].
It does work properly [[https://www.mediawiki.org/w/index.php?limit=50&tagfilter=&title=Special%3AContributions&contribs=user&target=Quiddity+%28WMF%29&namespace=1&tagfilter=&year=2015&month=-1 |at mediawiki]], afaict.