Wordfence “Problem” with time.ly calendar plugin: False positive?

I have the “All-in-One Event Calendar by Time.ly” plugin on a site under construction. On the day that Wordfence 6.3.5 was launched there was also an update to the Calendar. Timing wise, it was also the day after I made the site bilingual with PolyLang!

WF Scan alerted me to an issue with the Calendar alleging a modified JS file, and when I went to see the differences I got:
“We could not fetch a core WordPress file from the Wordfence API.”

So – is this WF’s way of reinforcing the messages it sent simultaneously about needing the said updates? (something about being different from WordPress’ current distribution of calendar plugin) Or doesn’t like the calendar being bilingual (it can indeed speak Welsh without prompting)
Or – and my hunches doubt this but I’ll ask for completeness – has it an issue with my having had to encode calls to the plugin on the translation page? because you can only configure the calendar in English (no I don’t mean the Default Language, which is in fact English – I really mean English)