This happened shortly after this bug [https://forum.star-conflict.com/index.php?/topic/32450-weird-red-ish-chat-millisecondes-disconnect/#comment-388174](< base_url >/index.php?/topic/32450-weird-red-ish-chat-millisecondes-disconnect/#comment-388174)
As the screenshot will show, most of the beam is invisible and become visible near the target.
Should be located in between 20:38:47.175 and 21:00:08.534 in game log.