Crash on WalkTypeTreeInternal when updating field on a scriptable object

Reproduction steps:
1. Open the attached project “CrashRepro“
2. Create the custom ScriptableObject (Create > SSSTools > Fun Text > Text Animation) in the Project window
3. Add a new effect in “Effects“ in the Inspector window
4. Select “Rotation Effect” (SSSTools.FunText.Effects > Rotation Effect)
5. Change the “Max Rotation“ of the effect in the Inspector window

Expected result: Max rotation variable is changed
Actual result: Editor crashes

Reproducible with: 2022.1.0a14, 2022.2.16f1, 2023.1.0b12, 2023.2.0a12
Not reproducible with: 2021.3.24f1
Couldn’t test with: 2020.3.47f1, 2022.1.0a1-2022.1.0a13 - “Assets\Scripts\SSSTools\Utils\Extensions\Extensions.cs(112,41): error CS0246: The type or namespace name 'ReadOnlySpan<>' could not be found “

Reproducible on: Windows 10

First few lines of stack trace:

0x00007ff72b1fa51a (Unity) WalkTypeTreeInternal
0x00007ff72b1fa51a (Unity) WalkTypeTreeInternal
0x00007ff72c14f752 (Unity) SerializedProperty::SyncSerializedObjectVersion
0x00007ff72a86728a (Unity) SerializedProperty_CUSTOM_SyncSerializedObjectVersion
0x000001d72f6ed101 (Mono JIT Code) (wrapper managed-to-native) UnityEditor.SerializedProperty:SyncSerializedObjectVersion (UnityEditor.SerializedProperty)