After upgraded to discourse 2.8.0.beta7 & beta8 versions, below issue was occurred,
Headsection which will work when discourse events getting triggered like OnAppEvent, DecorateWidget & OnPageChange. But the scripts written in
</head>section wasn’t loaded in the browser sometimes. Header and After Header sections are loading well across the site. I found the
</head>section script file was missing in browser source by seeing the below image,
Can someone confirm this issue occurred by upgrading the discourse version into 2.8.0.beta7 & beta8 or not ?