The loading of fonts in webpack seems to lead to decoding errors. Maybe the loaders, which are marked as deprecated, should be updated to the asset modules: https://webpack.js.org/guides/asset-modules/
Url-Loader: DEPREACTED for v5: please consider migrating to asset modules.
Source: https://github.com/webpack-contrib/url-loader
Found in Leanup 1.3.33