Shell problem unless running under Xorg

[jb_daefo]

When using Zsh, repeating a command, editing a word or two results in inexact echoing of the cursor, so the result is a misspelled word or something with extra letters, a - apart from the parameter, extra parameters that may make no sense and break the command, etc.

A workaround is to Ctnl-Q it, do an ls, then what is about to be typed is echoed accurately before running it to see if it is what is intended.

Another workaround is to do the commands in a terminal before exiting Xorg, which is easy enough, but not always convenient.

A web search did not give any clue as to any similar problem for anyone else...

Suggestions appreciated...