"externalTerminal" does not work on Linux

[Kriper1111]

Environment data

• VS Code version: 1.60.2
• Extension version (available under the Extensions sidebar): v2021.9.1246542782
• OS and version: Linux debian 5.10.0-8-amd64, Debian 11 bullseye
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.9.2
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): N/A
• Relevant/affected Python packages and their versions: N/A
• Relevant/affected Python-related VS Code extensions and their versions: N/A
• Value of the python.languageServer setting: Jedi

Expected behaviour

Konsole window would open and debugging will start.

Actual behaviour

Upon launching, a blank Konsole window opens and nothing else happens. Terminal doesn't seem to respond to any inputs. If interrupted, traceback ends at debugpy/launcher/__main__.py line 54.
The script is not executed.

Steps to reproduce:

1. Ensure VSCode is installed with python extension in it.
2. Create a debug profile, with "console" in launch.json set to externalTerminal
3. Set "terminal.external.linuxExec" in config.json to "konsole"
4. Create a simple python file (for example)
5. Run the debugger

Logs

Output for Python in the Output panel, debugpy logs and additional notes

Error 2021-09-23 12:43:44: stderr jediProxy Error (stderr) /home/john/.vscode/extensions/ms-python.python-2021.9.1246542782/pythonFiles/completion.py:624: DeprecationWarning: Deprecated since version 0.16.0. Use Script(...).infer instead.
  script.goto_definitions(), request["id"]

Error 2021-09-23 12:43:44: stderr jediProxy Error (stderr) /home/john/.vscode/extensions/ms-python.python-2021.9.1246542782/pythonFiles/completion.py:144: DeprecationWarning: Deprecated since version 0.16.0. Use Script(...).get_signatures instead.
  call_signatures = script.call_signatures()

With logToFile set to true:

• debugger.vscode_7bb23d94-2f60-454d-a0cb-3cdab70ebe06.log
• debugpy.adapter-15987.log
• debugpy.launcher-16007.log
  I am guilty of using VSCodium, but the extension is installed from latest VSIX from official repo. Additionaly, the same issue has been observed on regular VSCode

This has also been tested on ArcoLinux (Linux 5.13.13-arch1-1 microsoft/vscode-python#1 SMP PREEMPT Thu, 26 Aug 2021 19:14:36 +0000 x86_64 GNU/Linux) with VSCode version 1.60.2-1, and latest ms-python version, with the same results.
Additionaly, similar issue happens with Alacritty (debugger reports 'alacritty' failed with exit code 1) and xterm (same as with Konsole).

Konsole version: 20.12.3
XTerm version: XTerm(366)

The debugger does work if "terminal.external.linuxExec" is gnome-terminal, at least on my Debian install.