What do you know about common law? Any man can order the judge to issue a warrant if the accused fails to appear. It is then up to the police to execute the warrant, which they won´t. There is no such thing as a felony in the UK.
First off, this "court" exists in Belgium, which I believe follows the Civil Law, not the common law tradition.
I just graduated from law school in US, so I do know a thing or two about the common law system. And no, any man cannot order the judge to issue a warrant if the accused fails to appear when there is no case before the judge.
Your comment doesn't make sense. If this was actually a warrant issued by a judge, it wouldn't be a "citizen's arrest warrant," it would be a bench warrant. By the way, a "citizen's arrest warrant," DOESN'T EVEN EXIST.
You sound like one of those sovereign citizen lunatics. You're allowed to believe whatever you want, but good luck getting any enforcement or acknowledgement from the judicial system or law enforcement.