SystemD's output when listing units changed in v245. When units are in not-found state, they include a ● glyph in front. Previously, using --no-legend disabled output of this glyph, but now it's included regardless of that setting.

Related bug report: systemd/systemd#15077

It appears the fix was merged, but I have encountered several systems running v246 (latest release) that still have this problem.

Adding --plain to the command invocation works across the old (pre-v245) and newer versions.