See in the attachements how the line breaks (for the \help output) is messed up after displaying a stack trace (probably due to the unicode chars present there).

The stack trace content messes up both the output of the \help that was run before displaying the error, and for the \help command run after it.

\clear doesn't help to restore the line breaks. I have to close the SQL Shell window and open a new one.

Also, if you make the SQL Shell window to be in the "Floating" state (after the stack trace was displayed) and you play with the window's width, you'll notice that at some sizes the line breaks are good, but at other window sizes the text gets out of screen.