①Creating Custom Widgets
nls/ja/strings.js
define({
_widgetLabel: "シェープファイルの追加 (3D)"
});②Adding items from ArcGIS Enterprise
Adding custom widgets in the application extension (AppBuilder) in ArcGIS Enterprise 10.8.1
The title: シェープファイルの追加 (3D)

③Creating a WebAppBuilder from ArcGIS Enterprise.
Add a custom widget added in ②
An error occurs that the app will not start.

Q: Shouldn't the names ① and ② be the same?
Is there a limitation in the item name or a known bug that prevents the application from launching normally when the item name registered to Portal and the _widgetLabel of nls/en/string.js are the same?