Firstly, thank you for the wonderful mod! Seriously this has to be one of the most well put together mods and most fun ones I've had in a while. And the fact that it works with Zandronum is just shocking! Past Linked has been a class I've been looking forward to and I'm glad it's finally out!
Though, with Past Linked there is one inconvenience I've come across with my usual GZDoom setup. Unfortunately I'm unsure if it really has a solution but I figured I'd express it anyway! I already spoke to the mod's author about this but with Target Spy Past Linked causes a minor annoyance.
Specifically with his sword and shield weapon out, if you're looking at an enemy, the healthbar won't show up with the shield out. Reason being due to the fact that the shield has its own health and the mod shows it, or acts as it exists even when it's hidden, which will cover other healthbars since it's so close to the player.
I don't exactly expect there's much to do to fix this, and it isn't the biggest bug, just figured I'd let you be aware of its existence.
Here's a link to Target Spy if you need by the way! Keep up the great work!