I had no issues with this problem when playing Football Manager 2021 and older.
This issue occurred in Football manager 2022 too and raised this issue in the 2022 forum. https://community.sigames.com/bugtracker/previous-versions/football-manager-2022-bugs-forum/pre-game-and-in-game-editor/in-game-editor-staff-contract-issue-r7113/
It was looked into but wasn't resolved/fixed at all.
I do hope this issue can be fixed and resolved in the next update.
Thank you.