It's not that Mosh does anything wrong, but SSH has more features, and is supported by basically everything ever. Consequently, I stick with old-school SSH.
On my laptop I have a mosh session open to my remote shell basically all the time. In situations with spotty net access, it's actually a pretty reliable "canary" that indicates whether I have any access at all.
alias tmosh='() {mosh $* -- sh -c "tmux a || tmux"}'
>lost sessions cannot always be resumed, not even root can force that. >you can't scroll the terminal unless you use screen inside mosh >can't use mosh from the university network because UDP ports are filtered >can't autocomplete hosts in the config (ssh can do that)
but i still use it and would miss it very much, the whole experience is much smoother using mosh and bad connections are more bearable with it
If you mean writing "ssh <tab>" and having it auto-complete, that's a feature of the shell (usually with some "plugin" to add support for that particular command). They added support for Bash in 2012 [1], what OS and shell are you using?