I have the problem also:
if it can help:
After editing the When the command exits: Hold the terminal open
you can run this command from an existing gnome-terminal to reproduce the
problem:
gnome-terminal -e ls -altr (I get the the blinking cursor and no prompt)
if you type
gnome-terminal -x
I have the same problem
my command:
gnome-terminal --command echo test
A new terminal pops up but showing only a blinking cursor, no test AND
no prompt
if I start
gnome-terminal --command 'sh -c echo test sleep 5'
I do see the text, but I doen't return to a prompt ...
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