Okay, I'll investigate. Could you do me a favor and package your whole save folder to a .zip file, and send it to me via email: skypiecegames@gmail.com
Sorry I just replied, I already sent the save file
And I also tried a few more times by downloading new game files and without using the save file where I could previously buy traits.
And I've also tried putting the save file into the save file first and tried it on the same game file and there was no problem.
Also I'm waiting for the next update