fix fontawesome flickering

app/javascript/application.js

@@ -16,3 +16,4 @@ import { fab } from "@fortawesome/free-brands-svg-icons"
 import { library } from "@fortawesome/fontawesome-svg-core"
 import "@fortawesome/fontawesome-free"
 library.add(far, fas, fab)
+FontAwesome.config.mutateApproach = 'sync'

app/javascript/controllers/application.js

@@ -7,3 +7,5 @@ application.debug = stimulusDebug ? stimulusDebug.content === 'true' : false
 window.Stimulus = application
 
 export { application }
+
+