Mysterious SET antifeature

Device OS and version: LineageOS 15.1-20180903-NIGHTLY-bacon
Device model/manufacturer: OnePlus One
F-Droid version (in the About screen): 1.3.1
F-Droid privileged extension version (if installed): N/A

What did you do? (clear steps if possible)

Opened com.github.axet.audiorecorder.

What did you expect to see?

No antifeatures. (ref https://gitlab.com/fdroid/fdroiddata/blob/master/metadata/com.github.axet.audiorecorder.txt )

What did you see instead?

An unexplained "SET" antifeature, linking to a nonexistent wiki page.

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