Deserializing issue in Unity 2021.2.5

[yaroslav makarov]

1. Hello! I've faced with some weird bug when tried to open my 2020 LTS project in the latest 2021.2.5. So I'm using Sirenix editor end deserialize from .bytes file my list, but now seems like something wrong with encoding.

2. Before

   

   After

3. 

‌

[Antonio Rafael Antunes Miranda]

It would be helpfull if you could add a code snipet that shows how exactly you’re serializing/deserializing these values