Values not resetting in Inspector after "Play".

Unity Engine
1

I am fairly certain that the behaviour of Unity is to ignore all changes made to values during after runtime. So, if I have an int of 5 set in the inspector, click play, it changes to 12, then stop the game, the value should go back to 5.

This is happening for me all the time. I have a list of Serializable classes that represent my levels for my game (short puzzle game). I save this list as my game’s persistent data. The problem though is that if I play test a level the values don’t reset to 0 once I stop testing in the editor. Is this a bug or does this have something to do with me serializing the values?

2

I deleted my old save file and disabled saving and the problem persists. I’d really like to not have to go through and manually set all my values to 0, or write a script that resets everything when I stop execution in the editor. I’m at a loss for what is causing this.