When you are creating modern webpart, you need to upgrade your node modules to v1.4 manually by “npm updated” and “npm install –save @microsoft/sp-build-web@latest”, icon will not distort in v1.4 sharepoint sdk now.
When you are creating modern webpart, you need to upgrade your node modules to v1.4 manually by “npm updated” and “npm install –save @microsoft/sp-build-web@latest”, icon will not distort in v1.4 sharepoint sdk now.