Question Underscore and other symbols hides text in popup: _ # % (hotkey symbols?)

Hey
I am trying to use EditorGUILayout.Popup to show a list of options that can be edited by the user and may include symbols (_ # % etc.).
The problem is that these symbols sometimes hides words in the popup menu. Specifically it seems to hide the last word if it starts with such a symbol and is preceded by a space for example "Test _hidden" will show as "Test" in the popup.

Here is my test code:

Code (CSharp):

1. using UnityEngine;
2. using UnityEditor;
3. using System.Linq;
4.  
5. [CustomPropertyDrawer(typeof(int))]
6. public class SiblingGroupDrawer: PropertyDrawer
7. {
8.     static string[] test = new string[] { "test _thisIsHidden", " _thisBecomesLine", "_thisWorksFine", "wd _notHidden withFollowUp" };
9.     static GUIContent[] test2 = test.Select( s => new GUIContent(s) ).ToArray();
10.     public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
11.     {
12.         int oldIndex = property.intValue;
13.         int newIndex = EditorGUILayout.Popup(label, oldIndex, test2);
14.         if (newIndex != oldIndex)
15.         {
16.             property.intValue = newIndex;
17.         }
18.     }
19. }

And it shows like the this:


Do you know what is going on and how I can prevent this?

I am testing in Unity 2022.2.6f1