Custom workflow statuses are displayed incorrectly in the Related Cases grid

As a workaround, I added my new statuses to the list of CRCaseRelated statuses:
 

public class CRCaseMaint_Extension : PXGraphExtension<PX.Objects.CR.CRCaseMaint>
{
    #region Event Handlers
    public override void Initialize()
    {
        base.Initialize();

        PXCache cache = Base.Caches[typeof(CRCaseRelated)];

        PXStringListAttribute.AppendList<CRCaseRelated.status>(
            cache,
            null,
            new[]
            {
            "X",
            "V"
            },
            new[]
            {
            "Warten auf Extern",
            "Wiedervorlage"
            });
    }
    #endregion
}

Hi ​@DariaMaksymova ,

You're super close! The issue here comes down to dealing with two separate DAC classes: CRCase and CRCaseRelated.

Here is what is happening under the hood:

The CRCaseRelated.Status field pulls the raw status codes from CRCase (like X and V), but it doesn't automatically inherit the custom display labels you configured on CRCase.Status. That's why it defaults to showing the raw database values on the screen.

Your C# code approach will definitely work, but if you want to keep it simple and low-code without writing extra scripts:

Just repeat the same field customization for CRCaseRelated.Status that you did for CRCase.Status on the Fields tab of your customization project ( your second screenshot ). Once you map those same status values and labels to CRCaseRelated.Status, the UI will show the proper labels for the Related Cases tab as well.