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pydevd_comm.py start_client() does not set TCP_NODELAY on the connections it opens

Status: Open.

#2054 In microsoft/debugpy;

· John V. DelSignore, Jr. (jdelsign) opened on Aug 5, 2026

#debugpy becomes unresponsive after rapid breakpoint suspend/resume cycles in multithreaded Python programs

bugSomething isn't workingSomething isn't working

Status: Open.

#2048 In microsoft/debugpy;

· mengx2019 opened on Jul 20, 2026

No support for per-subpackage launch.json + in monorepo: debugger breaks imports that terminal run resolves

Status: Open.

#2047 In microsoft/debugpy;

· Chirag Singhal (chirag127) opened on Jul 1, 2026

Debugger is not working

questionFurther information is requestedFurther information is requested

Status: Open.

#2022 In microsoft/debugpy;

· Jon-Michael (Dr-Jdash) opened on May 9, 2026

Bug: Thread cleanup exception during interpreter shutdown when using VS Code debugger

Status: Open.

#2016 In microsoft/debugpy;

· Akash Kumar (indexedakki) opened on Apr 3, 2026

Process creation after debugging session not possible: teardown needed

Status: Open.

#2014 In microsoft/debugpy;

· Lexcon opened on Mar 22, 2026

Problems resuming multiple threads if in_process_debug_adapter is True

Fixed in next releaseThis issue has been fixed, but won't be available to customers until the next release.This issue has been fixed, but won't be available to customers until the next release.

Status: Open.

#2011 In microsoft/debugpy;

· Baldur Karlsson (baldurk) opened on Mar 11, 2026

Nested subprocess python -m ... fails module resolution only when parent is launched via debugpy

Status: Open.

#2002 In microsoft/debugpy;

· Michael Tufar (michaeltufar) opened on Mar 4, 2026

Unable to run a Python module in a subprocess when subProcess: true

bugSomething isn't workingSomething isn't working

Fixed in next releaseThis issue has been fixed, but won't be available to customers until the next release.This issue has been fixed, but won't be available to customers until the next release.

Status: Open.

#1997 In microsoft/debugpy;

· Pete (anvilpete) opened on Feb 23, 2026

debugpy 1.8.19 creates _DummyThread when inspecting PySide6 QThread under Python 3.13, causing teardown crash

bugSomething isn't workingSomething isn't working

Status: Open.

Bug

#1985 In microsoft/debugpy;

· Erriez opened on Dec 30, 2025

Initialization failure with --pid and --listen, from sidecar container

Status: Open.

#1973 In microsoft/debugpy;

· Chris Trahey (ctrahey) opened on Nov 21, 2025

Issue with debugpy and post portem debug hook in Python 3.12+

enhancementNew feature or requestNew feature or request

Status: Open.

#1970 In microsoft/debugpy;

· Andrej730 (Andrej730) opened on Nov 1, 2025