Created attachment 114618 [details] minimal example for the bug
I failed to put in a description, sorry for that. I had the following issue: If systemcontrols follow (-f) and directoy (--dir) are used together the follow doesn't follow properly all the files in the directory. I've added a minimal example.
Replaced by https://bugs.freedesktop.org/show_bug.cgi?id=90193.
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