BigDouble Array/List doesn't work in the editor

[snappedToGrid]

When setting up a BigDouble[] array SerializedField in a ScriptableObject, the inspector doesn't properly render the list, as shown below:

[SerializeField] public BigDouble[] CostList;

This is happening in Unity 2021.21f.

Any help will be greatly appreciated.

[snappedToGrid]

This was unrelated to BigDouble actually. I found out I had a ConditionalField that was supposed to hide the field. It didn't fully hide it which got me confused.