From settings, you can find edit settingssettings.json.json
You need to search by Preview:

Add the below code there:
"workbench.editor.enablePreview": false "workbench.editor.enablePreview": false Full code:
{ "editor.codeActionsOnSave": { }, "workbench.editor.enablePreview": false, } { "editor.codeActionsOnSave": { }, "workbench.editor.enablePreview": false, } 