Yes, I’m main SR.
The bug is that you’re mounted while swapping maps and somehow you stay mounted but the pet doesn’t spawn. Not sure on the details.
You have a decent workaround for when the problem is entering ET or Dungeons, dismount before entering the map, load into the map, mount again.
It might be related to companion fixes or something.
For example, if you were SR -> BM you could abuse the Sled to mount during Bloody Overdrive to save time. Now you need to wait the animation like with any pet.
Maybe it’s actually a race condition only exposed here, due to players having higher ping and load times compared to korean versions.
This only happens rarely and was fixed in future kToS patches, it’s on patch notes that we’ll get in the future.
I think this only happens when 2 players put the dice in a cube or something, quite rare to happen. If you check the minigame XML file for Castle it’s quite simple. But triggering these two things at the same time might cause a race condition issue where the next Stage isn’t started.
Also, about “15 minutes” on Castle, there’s a way to solve it faster. All rooms matches. Example: Say you got the dice from room with die 1 and put it on the room with die 3, you can get the die 3 and go back to die 1.
By doing this trick properly you can reduce your Castle runs by a lot, especially if you get at least a second person to help with cubes, then it’s even faster.
Another good practice is like, for example, get the die in room 1, then check room 6 then back to room 2 then 3,4,5 when checking dice x cube matching. When trying the second die, do the same, room 3, check room 4, then go back to room 2, then 1,6,5.
About this, you’re the only person with broken quest warp. Please, don’t mix the issues.
Did you already try verifying game cache files?