Sometimes, when recalling a previous command to edit values and reply command. While I am arrowing over left to the value I wish to edit, I will get some messages and my console and my cursor will reset position to the end of the line. When this happens sometimes my cursor will be restricted from moving at an arbitrary position in the line.
I am using a fairly long command maybe 80 characters.
Also, when typing, the cursor position may jump to different places in the line being edited. Have also seen the shell text get placed seemly randomly in my text history.