Remember my complaints about extra UI elements such as the leading pip and the Priwen Burst indicator not working? I noticed something that might be useful in tracking it down: it works in missions, but not in campaign. Additionally, after loading a campaign game, it will stop working in missions too until the game is restarted. Obviously I can only test the Priwen Burst in missions, not the pip, but so far I've always seen them behave identically.
Also, I've had an opportunity to play Starsector on a PC with Windows and a dedicated graphics card with 1 GB memory and it does the same thing, to put to rest worries about Linux or insufficient video memory being the culprit.
edit: I updated all my mods to make sure it hasn't been fixed recently, and the Templar burst now works as designed in campaign and in missions, but the pip still doesn't. Confusion abounds.