I thought it might have been due to the wt mod or something, so I was planning on testing a non-modded season one and then transfer into a non-modded season 2 15.1 and see if that fixed the issue. I guess since I just update my files over each other its possible it could be a result of the state of my game folder so I'll make them fresh versions. I'll update when I finish if that would be helpful, for a bugfix aspect.
Edit: For me at least a fresh download unmodded playthrough/transfer didn't fix it, it does seem to still persist in the Patreon bugfix release.
If I may make a minor suggestion on how to test the new content before overwriting...
I too overwrite my current files with the latest updates. However, I do something first that saves me a ton of grief...
As soon as I get a new update DL, I move it into the main game folder for the current game files, not the folder called "game" but the main folder that contains all of the game files and .exe. I then extract the new files into a folder that has the same name as the update right inside my main folder for the previous update.
Then I run the new files from this new subfolder. This has two major benefits...
1) The new files can draw from all of your existing saves since it resides in the same parent folder.
2) You can run the game to check for any discrepancies BEFORE you overwrite your existing files. If I am in a hurry, to speed check I simply turn on "skip unread" in the settings and use the control key (ctrl) as a fast forward button, pressing it in short bursts to avoid skipping too far too fast. The game will still stop for choices. I also use that when an update to a game requires a restart due to new things in that update.
Since I have encountered a few glitches in releases for this game, I always follow those steps prior to allowing the new files to overwrite and become my new current version. I just find it a good practice to protect my existing saves and files.
Hope that helps you, my friend. Adventure ever on, Phat
PS: I already scanned this latest update from my most recent save and found no errors or glitches yet. I'll know better once I actually slow play the new content at my normal snail's pace. I savor the good games and this is certainly one of them.