Trouble with the ending of Civil War questline (Stormcloaks)

[Reynner]

First of all, I'm not sure where exactly I should post this - I don't think this is a mod error, since the only mod that I have that affects the Civil War is the "Civil War Repairs" mod, and I already tried disabling it to no avail. If this is the wrong place to post this, sorry in advance.

I'm doing the Civil War for the Stormcloaks and got to the final step - taking Solitude. As soon as I report back to Galmar after clearing Fort Hraggstad, he just says his "We're taking the city" line and the quest marker for "Liberation of Skyrim" stays on top of his head. No journal update, nothing.

I figured this was a minor bug and continued the quest, so I went straight to Solitude and met Ulfric giving a speech to the soldiers. After the speech, we all enter Solitude, but Ulfric is nowhere to be seen. Only then does the journal update with the quest "Battle for Solitude" and tells me to get my orders from Ulfric, but the quest marker for Ulfric is outside of Solitude. Since the gate is locked during the battle, it asks me to go through the entire Potema's dungeon so I can get out and go speak to him. But guess what - Ulfric is f***ing nowhere to be found, and the quest marker just hangs around the air.

I tried going into Castle Dour, but nothing happens - Tulius just talks to me as if I'm just taking a lovely stroll through the Castle. If I attack him and Legate Rikke, Tulius will eventually kneel down and say "Enough", but absolutely nothing happens. I've tried messing around with the console, resetting everyone's AI, disabling and enabling, but nothing works. I know how buggy and full of glitch the Civil War quest is, but I've never had this issue before and I can't find anything about it on the internet. As it is, I can't complete the Civil War.

Here's my load order just in case:

Skyrim.esm
Update.esm
Dawnguard.esm
HearthFires.esm
Dragonborn.esm
Unofficial Skyrim Legendary Edition Patch.esp
ApachiiHair.esm
Campfire.esm
Cutting Room Floor.esp
Hothtrooper44_Armor_Ecksstra.esp
Hothtrooper44_ArmorCompilation.esp
Guard Dialogue Overhaul.esp
CollegeOfWinterholdImmersive.esp
3DNPC.esp
Book Covers Skyrim.esp
Prometheus_No_snow_Under_the_roof.esp
SkyFalls + SkyMills + DG + DB.esp
SDO Full-LOD - Waterfall Effects.esp
RealisticWaterTwo.esp
Oblivious Horses.esp
SDO Full-LOD - The Morthal Swamp Complete.esp
NoRoadPredators.esp
SoS - The Wilds.esp
SoS - Civilization.esp
SoS - The Dungeons.esp
marriagemod - alpha v3.esp
Immersive Weapons.esp
Destroy the Thieves Guild.esp
LocalizedGuildJobs.esp
Civil War Repairs.esp
TheChoiceIsYours.esp
transportato - ships.esp
Inconsequential NPCs.esp
RealisticWaterTwo - Legendary.esp
Cloaks.esp
Run For Your Lives.esp
SDO Full-LOD - Whiterun Trundra Creeks.esp
RealisticWaterTwo - Waves.esp
Frostfall.esp
1nivWICCloaks.esp
1nivWICSkyCloaksPatch.esp
aMidianborn_Skyforge_Weapons.esp
RealisticNeedsandDiseases.esp
purewaters.esp
RND_HearthFires-Patch.esp
RND_PureWaters-Patch.esp
RealisticWaterTwo - Dragonborn.esp
The Paarthurnax Dilemma.esp
icefloes.esp
RealisticWaterTwo - Waves - Dawnguard.esp
SDO Full-LOD - Giant Campfires.esp
RealisticWaterTwo - Dawnguard.esp
Gildergreen Regrown.esp
Sneak Tools.esp
Apocalypse - The Spell Package.esp
Beards.esp
better_torches_brighter_torchlight.esp
BF.esp
BFSEffects.esp
WindhelmFR.esp
dD - Enhanced Blood Main.esp
dD - Realistic Ragdoll Force - Realistic.esp
dD - Dragonborn-Dawnguard-EBT Patch.esp
dD - Reduced Splatter Size.esp
dD - Reduced Wound Size.esp
DeadlySpellImpacts.esp
Disparity.esp
donorcollegejoin.esp
Dr_Bandolier.sp
hairundergearDB.esp
hairunderheadgearDG.esp
honedmetal.esp
imp_helm_legend.esp
HoodsAndCirclets.esp
IcePenguinWorldMap.esp
IHSS.esp
MoreSnowWindyand150percenLessView.esp
mufn_archmage_hood.esp
mufn_hoodless_archmage_robes.esp
NB-Scars.esp
No Magic Ninja Dodge - No DLC.esp
No NPC Greetings.esp
NoSneakAttackSound.esp
RaceMenu.esp
RaceMenuMorphsCBBE.esp
RaceMenuPlugin.esp
Relationship Dialogue Overhaul.esp
RDO - Cutting Room Floor Patch.esp
RND_AnimalLoot.esp
RND_Dawnguard-Patch.esp
RND_Dragonborn-Patch.esp
SkyUI.esp
Sneak Tools Vanilla Hoods.esp
Sneak Tools Vanilla Masks.esp
Spells Cast Light.esp
StormWrathLightning.esp
Stronger Daedric Artifacts.esp
The Dance of Death - Ultimate Edition.esp
TradeBarter.esp
UndeadFX.esp
Unique Uniques.esp
WetandCold.esp
WetandCold - Ashes.esp
tmtNecromancyNoAshPiles.esp
Ordinator - Perks of Skyrim.esp
Apocalypse - Ordinator Compatibility Patch.esp
CWIOrdinatorPatch.esp
Alternated Start - Live Another Life.esp

TL;DR: Ulfric can't be found during Battle for Solitude and I can't get my orders from him.

Edited February 20, 2019 by Reynner