TextMesh Pro Changing font asset glyphs / properties fails to update TMP_Texts in scene / game

For some reason it stopped working in Unity 2020.2.7f1 & TMP 3.0.4;

Changing value in font asset (e.g. baseline), only changes it once, then it stops completely until next playmode enter / exit.

This is quite unfortunate, because there's no other way to tweak font properties.
Is there any workaround?

 

Upon further look, it seems like TMPro_EventManager.ON_FONT_PROPERTY_CHANGED(true, fontAsset) fails to notify TMP_Text objects correctly;

Setting manually hasPropertyChanged does the trick, although its suboptimal;

As a temporary workaround, I've made this hack (a bit GC heavy, so don't forget to close the window after you're done tweaking):

Code (CSharp):

1. // ReSharper disable CheckNamespace
2.  
3. using TMPro;
4. using UnityEditor;
5.  
6. namespace EditorExt {
7.    public class FontAssetUpdateWindow : EditorWindow {
8.       #region [Fields]
9.  
10.       private TMP_FontAsset _asset;
11.  
12.       #endregion
13.  
14.       [MenuItem("Tools/Font Asset Force Updater")]
15.       private static void OpenWindow() {
16.          FontAssetUpdateWindow window = CreateWindow<FontAssetUpdateWindow>("Font Asset Force Updater");
17.          window.Show();
18.       }
19.  
20.       private void OnEnable() { EditorApplication.update += PerformUpdate; }
21.  
22.       private void OnDisable() { EditorApplication.update -= PerformUpdate; }
23.  
24.       private void PerformUpdate() {
25.          if (_asset == null) return;
26.        
27.          TMP_Text[] texts = FindObjectsOfType<TMP_Text>();
28.          foreach (TMP_Text text in texts) {
29.             if (text.font == _asset) {
30.                text.havePropertiesChanged = true;
31.             }
32.          }
33.       }
34.  
35.       private void OnGUI() {
36.          _asset = (TMP_FontAsset) EditorGUILayout.ObjectField(_asset, typeof(TMP_FontAsset), false);
37.       }
38.    }
39. }