Thread:Support/'Show messages with suggestions from translation memory' yields incomplete list

I am translating to ksh, my interface language is ksh. I usually start with 'Show messages with suggestions from translation memory' for a group, and when done, proceed with the untranslated messages. Every so often, I get suggestions from the translation memory for those ones, too, even for messages that did not show up during the 1st step.

This is an example:
 * https://translatewiki.net/w/i.php?title=MediaWiki:Prefs-upwiz-licensing/ksh&action=edit&loadgroup=ext-uploadwizard&loadtask=untranslated