Misaki
Hello, thank you for your hard work.
Unfortunately, my project seems to use quite complicated stuff, so it might be very difficult and time-consuming to create another minimal project. Also, as I spent too much time on this issue, I cannot wait another day to get solutions.
So I decided to do a rework on my spine animation. I'll make a similar form of spine animation from the start. I'll try making these at the latest state(spine, runtime, ...) and try importing them on my Unity project. After the reimport, if the same thing occurs again, I'll ask for your help.
Still, I do appreciate that you tried to help me. Thank you.