Memray's test suite deadlocks with Textual 0.65.2

[godlygeek]

Memray's test suite deadlocks after Textual 0.65.2 (and specifically, I've bisected the deadlock to 7cfa1a6).

This minimal reproducer deadlocks:

import asyncio

from textual.app import App
from textual.containers import Horizontal
from textual.widgets import Footer
from textual.widgets import Tree


class TreeApp(App[None]):
    def compose(self):
        yield Horizontal(Tree("Dune"))
        yield Footer()


app = TreeApp()

async def run_test():
    async with app.run_test():
        pass

asyncio.run(run_test())

Removing the yield Footer() line causes it to no longer deadlock, as does changing the yield Horizontal(Tree("Dune")) to yield Tree("Dune")

textual diagnose output:

# Textual Diagnostics

## Versions

| Name    | Value  |
|---------|--------|
| Textual | 0.65.2 |
| Rich    | 13.7.1 |

## Python

| Name           | Value                                                            |
|----------------|------------------------------------------------------------------|
| Version        | 3.11.9                                                           |
| Implementation | CPython                                                          |
| Compiler       | GCC 11.2.1 20220127 (Red Hat 11.2.1-9)                           |
| Executable     | /home/mwoznisk/.pyenv/versions/3.11/envs/memray-3.11/bin/python3 |

## Operating System

| Name    | Value                               |
|---------|-------------------------------------|
| System  | Linux                               |
| Release | 5.15.153.1-microsoft-standard-WSL2  |
| Version | #1 SMP Fri Mar 29 23:14:13 UTC 2024 |

## Terminal

| Name                 | Value           |
|----------------------|-----------------|
| Terminal Application | tmux (3.4)      |
| TERM                 | screen-256color |
| COLORTERM            | *Not set*       |
| FORCE_COLOR          | *Not set*       |
| NO_COLOR             | *Not set*       |

## Rich Console options

| Name           | Value                |
|----------------|----------------------|
| size           | width=274, height=65 |
| legacy_windows | False                |
| min_width      | 1                    |
| max_width      | 274                  |
| is_terminal    | True                 |
| encoding       | utf-8                |
| max_height     | 65                   |
| justify        | None                 |
| overflow       | None                 |
| no_wrap        | False                |
| highlight      | None                 |
| markup         | None                 |
| height         | None                 |

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[willmcgugan]

Thanks. Will have a fix for the next version.

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