I have started running in an Ubuntu 16 VM, running tigervnc 1.7.0, and run into an odd environment. Local windows behave as expected when I use alt-, for instance in a shell to back up a word via alt-b. But when I use xterm to ssh to another host, it treats the character differently -- for example generating "â" rather than backing up. Sounds like it's mapping the character differently, maybe via UTF. But I haven't run into this on other systems. I can't really tell if it's an issue with ssh, xterm, or the VNC server.
Googled and searched on ask ubuntu, but I'm coming up short. If it's a dup, sorry, please point me the right direction. I had high hopes for this one, but it seems different, as it's just ssh that's getting confused: Alt key works on Ubuntu 14.04 VM, ignored on 15.10 VM