I've been having this problem too, and I made a post about it on [r/ridditisfun][redd.it/g7alo3]. It appears as though anything that uses Android System WebView is affected.
[Here][imgur.com/a/e2rqkDN] is a link to a comparison album between Reddit is fun and the chrome app.
For reddit is fun specifically, it seems like chrome custom tabs (Settings --> Browser --> Chrome Custom Tabs) is a viable workaround.