I agree, this issue should be investigated by CG Dev team, EA always said that they are checking THEIR logs but, if there is any issue regarding a freeze related to the Unity update, well if this was deadlock (state machine?, multithread?, ...), the logs would show NOTHING except if the app print everything it does what I am quite sure it doesn't.
Let me know if I am wrong but, since it is a client side freeze/crash, in the event of a SIEGSEV/SIEGKILL/SIEGTERM/.... you need root access to retrieve systems logs, this app doesn't have root access, even if there is an handler installed to capture those signals, I don't remember the game uploading the logs at any moment.
The right move is to let the dev team be aware that some complaints have been posted regarding client freeze/crash instead of giving us a notebook answer.
