Unity2022.2.0b升级后Inspector中字符串/文本框字符不显示求助

• 项目从Unity2019LTS升级至Unity2022.2.0b（搭配TMP3.2.0-pre.4）后，Inspector面板中「string」和「textarea」输入的字符无法显示
• 同时会触发两种错误之一：
  1. NullReferenceException: Object reference not set to an instance of an object
  2. MissingReferenceException: The variable m_AtlasTextures of FontAsset doesn't exist anymore
• 使用日语环境，项目未使用TMP
• 重启Unity可临时解决，但问题频繁复发

错误日志：

NullReferenceException: Object reference not set to an instance of an object
UnityEngine.TextCore.Text.FontAsset.SetupNewAtlasTexture () (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.FontAsset.TryAddCharacterInternal (System.UInt32 unicode, UnityEngine.TextCore.Text.Character& character, System.Boolean shouldGetFontFeatures) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.FontAssetUtilities.GetCharacterFromFontAsset_Internal (System.UInt32 unicode, UnityEngine.TextCore.Text.FontAsset sourceFontAsset, System.Boolean includeFallbacks, UnityEngine.TextCore.Text.FontStyles fontStyle, UnityEngine.TextCore.Text.TextFontWeight fontWeight, System.Boolean& isAlternativeTypeface) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.FontAssetUtilities.GetCharacterFromFontAsset_Internal (System.UInt32 unicode, UnityEngine.TextCore.Text.FontAsset sourceFontAsset, System.Boolean includeFallbacks, UnityEngine.TextCore.Text.FontStyles fontStyle, UnityEngine.TextCore.Text.TextFontWeight fontWeight, System.Boolean& isAlternativeTypeface) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.FontAssetUtilities.GetCharacterFromFontAssets (System.UInt32 unicode, UnityEngine.TextCore.Text.FontAsset sourceFontAsset, System.Collections.Generic.List`1[T] fontAssets, System.Boolean includeFallbacks, UnityEngine.TextCore.Text.FontStyles fontStyle, UnityEngine.TextCore.Text.TextFontWeight fontWeight, System.Boolean& isAlternativeTypeface) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.TextGenerator.GetTextElement (UnityEngine.TextCore.Text.TextGenerationSettings generationSettings, System.UInt32 unicode, UnityEngine.TextCore.Text.FontAsset fontAsset, UnityEngine.TextCore.Text.FontStyles fontStyle, UnityEngine.TextCore.Text.TextFontWeight fontWeight, System.Boolean& isUsingAlternativeTypeface) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.TextGenerator.SetArraySizes (UnityEngine.TextCore.Text.TextProcessingElement[] textProcessingArray, UnityEngine.TextCore.Text.TextGenerationSettings generationSettings, UnityEngine.TextCore.Text.TextInfo textInfo) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.TextGenerator.Prepare (UnityEngine.TextCore.Text.TextGenerationSettings generationSettings, UnityEngine.TextCore.Text.TextInfo textInfo) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.TextGenerator.GetPreferredValues (UnityEngine.TextCore.Text.TextGenerationSettings settings, UnityEngine.TextCore.Text.TextInfo textInfo) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.TextHandle.UpdatePreferredValues (UnityEngine.TextCore.Text.TextGenerationSettings tgs) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.TextCore.Text.TextHandle.ComputeTextWidth (UnityEngine.TextCore.Text.TextGenerationSettings tgs) (at <d848a5f0d57c4e96b3f27c1dd5805d00>:0)
UnityEngine.UIElements.UITKTextHandle.ComputeTextWidth (System.String textToMeasure, System.Boolean wordWrap, System.Single width, System.Single height) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.UIElements.TextUtilities.MeasureVisualElementTextSize (UnityEngine.UIElements.TextElement te, System.String textToMeasure, System.Single width, UnityEngine.UIElements.VisualElement+MeasureMode widthMode, System.Single height, UnityEngine.UIElements.VisualElement+MeasureMode heightMode) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.UIElements.TextElement.MeasureTextSize (System.String textToMeasure, System.Single width, UnityEngine.UIElements.VisualElement+MeasureMode widthMode, System.Single height, UnityEngine.UIElements.VisualElement+MeasureMode heightMode) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.UIElements.TextElement.DoMeasure (System.Single desiredWidth, UnityEngine.UIElements.VisualElement+MeasureMode widthMode, System.Single desiredHeight, UnityEngine.UIElements.VisualElement+MeasureMode heightMode) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.UIElements.VisualElement.Measure (UnityEngine.Yoga.YogaNode node, System.Single width, UnityEngine.Yoga.YogaMeasureMode widthMode, System.Single height, UnityEngine.Yoga.YogaMeasureMode heightMode) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.UIElements.VisualElement.<AssignMeasureFunction>b__423_0 (UnityEngine.Yoga.YogaNode node, System.Single f, UnityEngine.Yoga.YogaMeasureMode mode, System.Single f1, UnityEngine.Yoga.YogaMeasureMode heightMode) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.Yoga.YogaNode.MeasureInternal (UnityEngine.Yoga.YogaNode node, System.Single width, UnityEngine.Yoga.YogaMeasureMode widthMode, System.Single height, UnityEngine.Yoga.YogaMeasureMode heightMode) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEngine.Yoga.Native.YGNodeMeasureInvoke (UnityEngine.Yoga.YogaNode node, System.Single width, UnityEngine.Yoga.YogaMeasureMode widthMode, System.Single height, UnityEngine.Yoga.YogaMeasureMode heightMode, System.IntPtr returnValueAddress) (at <2c62f5a99353486389ce268a5295ac09>:0)
UnityEditor.InspectorWindow:RedrawFromNative()

• 清理TMP缓存与残留资源：打开Window > TextMeshPro > TMP Settings，点击Clear All TMP Cache Data；删除项目中Assets/TextMeshPro目录（若存在），再通过Window > TextMeshPro > Import TMP Essential Resources重新导入基础资源
• 替换默认UI字体：在Edit > Project Settings > UI Toolkit > Default Font中，指定支持日语的系统字体（如Noto Sans JP）或自定义字体，替代默认关联的TMP字体
• 升级至稳定版本：当前使用的是2022.2.0b测试版，bug概率较高。升级到2022.2系列正式版或更高版本，同时搭配对应版本的稳定版TMP（避免使用pre预发布版本）
• 重置UI Toolkit设置：在Edit > Preferences > UI Toolkit中点击Reset to Default，恢复默认配置排除冲突
• 重建资源库：关闭Unity，删除项目根目录下的Library文件夹，重新打开Unity让其自动生成资源库，修复资源引用异常

内容的提问来源于stack exchange，提问作者user44024