As a result of the regression described in T379534: Page creation log inserted even if $wgPageCreationLog is false, Wikidata and Wikimedia Commons (as wikis that have wgPageCreationLog set to false) currently have a lot of log actions for '[username] performed unknown action "create/create"' (example on Wikidata, example on Commons). (There are also a few on testcommonswiki, but given that wiki's closed, they might not be worth dealing with)
I've opened this task in case it's worth considering removing them from the database or doing something about them in another way, given these actions shouldn't have been logged at all (and currently display in an unclear way) - however, if this shouldn't be done, feel free to close.