serializedObject.Update(); resets object's values after asset creation is confirmed

I have an object deriving from ScriptableObject and custom editor script for it. When I start to create asset, editor seems to work fine (creation is not confirmed yet as I can rename asset or cancel creation):


But as soon as I confirm asset creation, fields reset:

Part of custom editor:

Code (CSharp):

1.  
2. public override void OnInspectorGUI()
3.     {
4.         serializedObject.Update();
5.      
6.         // Draw some stuff
7.  
8.         serializedObject.ApplyModifiedProperties();
9.     }

I found out that

serializedObject.Update()

causes the object to reset. If I remove that line, fields stay the same after asset creation, but I can't change its fields after.

But after next recompilation object calls it's

OnEnable()

and fields appear back. CustomEditor don't reset them again.

How can I fix that?