https://youtu.be/iTLxgJWWXKM is a link to some of what I have found about this glitchy behavior (i also found out that you cant take a signal from it with a repeater)
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Cleaning up old tickets: This ticket has not been updated recently (~1 year+) so is being closed as Cannot Reproduce. If you feel this is still a valid issue then please comment, or create a new ticket following the Issue Guidelines.
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From the screenshot, it looks like you're using a command or command block. What command did you execute? If it's in a command block, what are its settings and how is it activated?