[BUG] Main Quest: Door to stables in Crow's Perch open

[owlsintime]

During the Family Matters quest, there's a point where you enter Crow's Perch to the stables brning and the baron wanting to fistfight. Whether I decide to rescue the stableboy or not, the narrow door to the stables next to the ladder opens yet is impossible to cross - there's an invisible barrier. It seems like the game can't decide wheter the door is open or closed. Later in the Ugly Baby questline, an NPC has to use that door to get the 'ugly baby', but the door already being open causes the game to load the cutscene infinitely. The threshold can't be crossed, the door cannot be physically moved. I can't continue the main quest.
I started a new run and made a few attempts at the 'burning stables' part, and in one of them I managed to finish this part and the ensuing conversation with the baron and the door was closed. After saving and reloading, the door was open again. I've attatched two images, one before reloading and one after.
I've also attached the save game file for that run.
I've tried the usual: restarting the console, restarting the game, starting new runs, deleting and re-installing, loading in at a different location to allow the game time to load, loading autosaves, etc.
I'm running the GOTY edition of the game on a PS4Pro, licensed to a German account (CUSA05537). Is there anything that can be done? I suspect simply setting the code for that door to the closed state would be enough, but I don't know enough to be able to do that. It's super frustrating because by now I've put roughly 120 hrs into the game yet can't continue the main quest.
Thank you for your help.

Edit: save file won't upload, I have uploaded it here: https://wetransfer.com/downloads/11...2686ee2a5730d780fc43cfb720211104085129/0f54c1

 

[devivre]

Did you check some of the video playthroughs for that quest? At least during the fire the door is blocked by rubble as far as I recall (my playthrough was some time ago though). And it's best to use the ladder...

 

[Riven-Twain]

And, if I recall, that door can only be entered before the burning-stable sequence. As devire advises, you should use the ladder during the quest.

 

[owlsintime]

Oh, I used the ladder. But after the quest the rubble is gone and the door is open but has an invisible barrier.
When the baron's man goes to open it to retrieve the 'ugly baby' later, he can't because it's already open - but unusable.

 

[Riven-Twain]

But after the quest the rubble is gone and the door is open but has an invisible barrier.

I've encountered that barrier issue for Geralt before, but never for the NPC. Strange. You might try the steps outlined here.