Missing a new line in $PROMPT causes extra new lines to be printed in buffers containing multiline strings

[Spitfire1900]

@$PROMPT = '''{prompt_bar}{RESET}{WHITE}{prompt_end_xonsh}{RESET}'''

mainstay kyle /tmp/1234abc/xontrib-prompt-bar                                                                                                                                                                                                 7/pyproject.toml   .venv  25-01-06 21:39:39-05
@print('''
 
 extra new lines
 
 ''')
 
 

extra new lines


mainstay kyle /tmp/1234abc/xontrib-prompt-bar                                                                                                                                                                                                 7/pyproject.toml   .venv  25-01-06 21:40:03-05
@$PROMPT = '''{prompt_bar}{RESET}
 {WHITE}{prompt_end_xonsh}{RESET}'''
 
 

mainstay kyle /tmp/1234abc/xontrib-prompt-bar                                                                                                                                                                                                 7/pyproject.toml   .venv  25-01-06 21:40:09-05
@print('''
 no extra newlines
 ''')

up here


mainstay kyle /tmp/1234abc/xontrib-prompt-bar                                                                                                                                                                                                 7/pyproject.toml   .venv  25-01-06 21:40:21-05
@print('''no extra newlines''')
no extra newlines

mainstay kyle /tmp/1234abc/xontrib-prompt-bar                                                                                                                                                                                                 7/pyproject.toml   .venv  25-01-06 21:40:33-05
@

[Spitfire1900]

Should note, this was seen on Konsole on Ubuntu noble and doesn't reproduce on Windows.