Hello @Bugreporter, as always please create a community consensus for this (https://meta.wikimedia.org/wiki/Requesting_wiki_configuration_changes). Thanks !

See https://zh.wikiversity.org/wiki/Wikiversity:%E4%BA%92%E5%8A%A9%E5%AE%A2%E6%A0%88#%E4%B8%BB%E5%90%8D%E5%AD%97%E7%A9%BA%E9%97%B4%E7%9A%84%E5%AD%90%E9%A1%B5%E9%9D%A2

Change 455380 had a related patch set uploaded (by 星耀晨曦; owner: 星耀晨曦):
[operations/mediawiki-config@master] Allow subpages in main namespace in zhwikiversity

https://gerrit.wikimedia.org/r/455380

Can you watch the deployment process?

I've scheduled this to be deployed tomorrow, between 11:00 and 12:00 UTC.

I've scheduled this to be deployed to tomorrow EU SWAT, 11:00-12:00 UTC.

Change 455380 merged by jenkins-bot:
[operations/mediawiki-config@master] Allow subpages in main namespace in zhwikiversity

https://gerrit.wikimedia.org/r/455380

Mentioned in SAL (#wikimedia-operations) [2018-08-29T11:25:15Z] <hashar@deploy1001> Synchronized wmf-config/InitialiseSettings.php: Allow subpages in main namespace in zhwikiversity - T202007 (duration: 00m 56s)

I ran namespaceDupes.php while at it. Before and after deployment the result is the same:

$ mwscript namespaceDupes.php --wiki=zhwikiversity
0 pages to fix, 0 were resolvable.

pagelinks from=2896 ns=0 dbk=WV:RCA -> Wikiversity:RCA DRY RUN
pagelinks from=3270 ns=0 dbk=WV:不要人身攻击 -> Wikiversity:不要人身攻击 DRY RUN
pagelinks from=4350 ns=0 dbk=WV:嵌入包含 -> Wikiversity:嵌入包含 DRY RUN
pagelinks from=1326 ns=0 dbk=WV:快捷方式列表 -> Wikiversity:快捷方式列表 DRY RUN
pagelinks from=4350 ns=0 dbk=WT:Twinkle -> Wikiversity_talk:Twinkle DRY RUN
pagelinks from=163 ns=0 dbk=T:Navbox -> Template:Navbox DRY RUN
pagelinks from=207 ns=0 dbk=T:Navbox -> Template:Navbox DRY RUN
7 links to fix, 7 were resolvable.

Running the script with --fix does not fix those page links but I guess that should be a different task.