[BUG] Progress with multiple tasks and transient will delete written lines on stop() and start()

[charlydelta]

• I've checked docs and closed issues for possible solutions.
• I can't find my issue in the FAQ.

Describe the bug

I have a Progress with multiple tasks. At some point, I want to have a user interaction by prompting. To not clutter the output, I made the Progress transient. The idea was to stop() the progress, query the user, and start() the progress again. If I do so, however, several lines are deleted from the output. I created a MWE to demonstrate this bug (ignore the function input_with_prefill for the beginning):

import time

from rich.console import Console
from rich.progress import Progress


def input_with_prefill(prompt="", prefill=""):
    """
    This is a function I use to offer the user a prompt with a prefill
    they can edit. I don't think it has something to do with this bug.
    """

    import readline

    def hook():
        readline.insert_text(prefill)
        readline.redisplay()

    readline.set_pre_input_hook(hook)
    # Write the prompt with prefil to the terminal.
    result = input(f"Line 3: {prompt}").strip()
    readline.set_pre_input_hook()

    return result


console = Console()

# Print two lines of info. This is important info for the user.
console.print("Line 1: Print some important info.")
console.print("Line 2: Print some more important info.")

with Progress(console=console, transient=True) as progress:
    # Do some work and analysize stuff...
    task_a = progress.add_task("Analyzing your fridge...")
    task_b = progress.add_task("Analyzing bottom fridge drawer...")
    task_c = progress.add_task("Analyzing left corner of drawer...")  # <-- [1] Try out-commenting.
    time.sleep(0.5)

    # We want to ask the user something, so hide the progress bars.
    progress.stop()

    # Ask the user.
    favorite_food = input_with_prefill(prompt="Favorite Food? ", prefill="Pizza")

    #progress.print()  # <-- [2] Try remove comment.
    #progress.print()  # <-- [2] Try remove comment.

    # Now that we have the answer we can show the progress bars again and keep processing
    progress.start()
    time.sleep(0.5)

    # Print the result of the analysis.
    progress.print(f"Line 4: Favorite food is {favorite_food}.")

Expected Behavior

I thought the output would look like this:

Line 1: Print some important info.
Line 2: Print some more important info.
Line 3: Favorite Food? Hamburger
Line 4: Favorite food is Hamburger.

Actual Behavior

Somehow, two lines are deleted:

Line 1: Print some important info.
Line 4: Favorite food is Hamburger.

Insights

• It has to do with the number of tasks. If you out-comment one task (e.g., task_c, see [1]), it will only remove one line instead of two.
• If you know the number of tasks, you can compensate by printing n-1 new lines (see [2]), with n = number of tasks.

Provide a minimal code example that demonstrates the issue if you can. If the issue is visual in nature, consider posting a screenshot.

Platform

Click to expand

Platform Info

name@host  ~  lsb_release -a

No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 11 (bullseye)
Release:	11
Codename:	bullseye
name@host  ~  lsb_release -a
No LSB modules are available.
Distributor ID:	Debian
Description:	Debian GNU/Linux 11 (bullseye)
Release:	11
Codename:	bullseye
name@host  ~  uname -a
Linux phi-deianeira 5.10.0-25-amd64 #1 SMP Debian 5.10.191-1 (2023-08-16) x86_64 GNU/Linux
name@host  ~  python --version
Python 3.9.2
name@host  ~  zsh --version
zsh 5.8 (x86_64-debian-linux-gnu)

Output of python -m rich.diagnose

(venv)  chris@phi-deianeira  ~  python -m rich.diagnose
╭───────────────────────── <class 'rich.console.Console'> ─────────────────────────╮
│ A high level console interface.                                                  │
│                                                                                  │
│ ╭──────────────────────────────────────────────────────────────────────────────╮ │
│ │ <console width=140 ColorSystem.TRUECOLOR>                                    │ │
│ ╰──────────────────────────────────────────────────────────────────────────────╯ │
│                                                                                  │
│     color_system = 'truecolor'                                                   │
│         encoding = 'utf-8'                                                       │
│             file = <_io.TextIOWrapper name='<stdout>' mode='w' encoding='utf-8'> │
│           height = 77                                                            │
│    is_alt_screen = False                                                         │
│ is_dumb_terminal = False                                                         │
│   is_interactive = True                                                          │
│       is_jupyter = False                                                         │
│      is_terminal = True                                                          │
│   legacy_windows = False                                                         │
│         no_color = False                                                         │
│          options = ConsoleOptions(                                               │
│                        size=ConsoleDimensions(width=140, height=77),             │
│                        legacy_windows=False,                                     │
│                        min_width=1,                                              │
│                        max_width=140,                                            │
│                        is_terminal=True,                                         │
│                        encoding='utf-8',                                         │
│                        max_height=77,                                            │
│                        justify=None,                                             │
│                        overflow=None,                                            │
│                        no_wrap=False,                                            │
│                        highlight=None,                                           │
│                        markup=None,                                              │
│                        height=None                                               │
│                    )                                                             │
│            quiet = False                                                         │
│           record = False                                                         │
│         safe_box = True                                                          │
│             size = ConsoleDimensions(width=140, height=77)                       │
│        soft_wrap = False                                                         │
│           stderr = False                                                         │
│            style = None                                                          │
│         tab_size = 8                                                             │
│            width = 140                                                           │
╰──────────────────────────────────────────────────────────────────────────────────╯
╭─── <class 'rich._windows.WindowsConsoleFeatures'> ────╮
│ Windows features available.                           │
│                                                       │
│ ╭───────────────────────────────────────────────────╮ │
│ │ WindowsConsoleFeatures(vt=False, truecolor=False) │ │
│ ╰───────────────────────────────────────────────────╯ │
│                                                       │
│ truecolor = False                                     │
│        vt = False                                     │
╰───────────────────────────────────────────────────────╯
╭────── Environment Variables ───────╮
│ {                                  │
│     'TERM': 'xterm-256color',      │
│     'COLORTERM': 'truecolor',      │
│     'CLICOLOR': None,              │
│     'NO_COLOR': None,              │
│     'TERM_PROGRAM': None,          │
│     'COLUMNS': None,               │
│     'LINES': None,                 │
│     'JUPYTER_COLUMNS': None,       │
│     'JUPYTER_LINES': None,         │
│     'JPY_PARENT_PID': None,        │
│     'VSCODE_VERBOSE_LOGGING': None │
│ }                                  │
╰────────────────────────────────────╯
platform="Linux"

Output of pip freeze | grep rich

name@host  ~  pip freeze | grep rich
rich==13.5.2

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