MediaWiki now expects or at least suggests to use C.UTF-8 as locale.

Per https://www.mediawiki.org/wiki/MediaWiki_1.30:

The "C.UTF-8" locale should be used for $wgShellLocale, if available, to avoid unexpected behavior when code uses locale-sensitive string comparisons. For example, the Scribunto extension considers "bar" < "Foo" in most locales since it ignores case.

This requires two configuration changes:

• one for the mediawiki shell account in rOPS, to use C.UTF-8 instead of the default one (en_US.UTF-8 perhaps?)
• one for rSAASMW to set wgShellLocale at C.UTF-8