It is recommended to download Electrum software from the official site anyways so why the need to check for updates from within the wallet? 3.3.8 is the latest version, if you want to check if there is an update just visit the official site or their github and get the info from there.
I hope it never gets fixed, that way we will use the official sources to check what is new.
just using original site >
https://electrum.org/ to download it and I like to check Manual i have last ver or not.