Version 1.04
Quest: Now or Never
Location: Sewers before entering the room with the rats following the route through the hidden library.
Bug: Triss get's stuck in the doorway preventing geralt from passing into the next room.
Repeatable: 3 times in a row
Other notes: Managed to get past her by jumping through a tiny gap while sprinting, however the jump is too long and you will fall to your death past the ledge.
I was overburdened upon approaching the gate.
Can't seem to get her to move even by running all the way back to the cellar beneath the inn.
Previously when exiting the home where you pick up the two mages, for the pre-quest, Triss got stuck walking into the door way of their house, to the left side. Continuously walking. To fix this I had to go out of range to force the quest to play the "we got split up" dialogue.

Attached a screenshot for clarity. Hope this help. love the game, wish I was involved in making it :)

All the Best,
Mechy

EDIT: Solution for those who get stuck: Checkpoint saves with Triss slightly away from the gate, make sure you can sprint through the gate before she gets to it. Going through causes her to continue along her path and the quest appears to be continuing as normal. M

I found that going all the way back to the beginning, standing around the staircase with the hidden door will also reset Triss to the beginning of the quest (monsters stay dead). I ended doing it this way because later on I found I was a bit under powered.

I also had her just stand at the top of the stairs leading down to the rats. Luckily in my first time through, all the doors were unlocked, and she'd progressed normally. I just finished the dungeon and she miraculously caught up at a cut-scene.

You really gotta put in work with sweet lil Triss lol.