It’s been almost a year since I raised this issue, and no changes have been made: the EDENCOM side spawns fine, but the TRIG appears in the overview for a moment, then despawns.
"The ‘Entropic Disintegrator Werpost’ installed in Triglavian Minor Victory Systems and Pochven Systems was designed to warp in a defending Triglavian fleet around the attacked object when it came under fire from capsuleer or NPC ships (EDENCOM, Sleeper, Drifter, and occasionally Triglavian). However, this fleet currently does not warp in correctly on-grid. Although the Triglavian defense fleet can be briefly observed on directional scan when attacking the Werpost, it immediately warps out of the solar system.
This issue only occurs with Triglavian objects, as their counterparts, the EDENCOM defense objects ‘EDENCOM GunStar’ and ‘EDENCOM Heavy GunStar,’ correctly warp in EDENCOM fleets. I have observed this problem since the changes were made to the ‘Entropic Disintegrator Werpost’ in the June 2024 ‘Equinox’ update.