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

Unity Engine
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1

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?

2

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):

// ReSharper disable CheckNamespace

using TMPro;
using UnityEditor;

namespace EditorExt {
   public class FontAssetUpdateWindow : EditorWindow {
      #region [Fields]

      private TMP_FontAsset _asset;

      #endregion

      [MenuItem("Tools/Font Asset Force Updater")]
      private static void OpenWindow() {
         FontAssetUpdateWindow window = CreateWindow<FontAssetUpdateWindow>("Font Asset Force Updater");
         window.Show();
      }

      private void OnEnable() { EditorApplication.update += PerformUpdate; }

      private void OnDisable() { EditorApplication.update -= PerformUpdate; }

      private void PerformUpdate() {
         if (_asset == null) return;
        
         TMP_Text[] texts = FindObjectsOfType<TMP_Text>();
         foreach (TMP_Text text in texts) {
            if (text.font == _asset) {
               text.havePropertiesChanged = true;
            }
         }
      }

      private void OnGUI() {
         _asset = (TMP_FontAsset) EditorGUILayout.ObjectField(_asset, typeof(TMP_FontAsset), false);
      }
   }
}