'Copy Value' from Variables debugger window not working

[goonode]

Environment data

• VS Code version: code-insider-1.23.0-1523596516_amd64
• Extension version (available under the Extensions sidebar): 2018.3.1 (29 Mar 2018)
• OS and version: Ubuntu 18.04
• Python version (& distribution if applicable, e.g. Anaconda): 2.7
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): virtualenv
• Relevant/affected Python packages and their versions: N/A

Actual behavior

When in debug mode i open contextual menu to Copy value from variable and this does not work.
Also Copy from expression and Add to Watch do not work.
Also the Debug Console stop working after i select Copy Value item.

Steps to reproduce:

1. Press F5 to start debugging session
2. Go to VARIABLES panel and rigth click to show contextual menu on a variable
3. select Copy Value

Logs

No relevant logs appear

[DonJayamanne]

Please could you try this with the experimental debugger.
Just change the type setting from python to pythonExperimental in your launch.json

[goonode]

Well changing to pythonExperimental gives me some feedbacks when i select Copy Value on any var:

DEBUG CONSOLE

pydev debugger: New process is launching (breakpoints won't work in the new process).
pydev debugger: To debug that process please enable 'Attach to subprocess automatically while debugging?' option in the debugger settings.

(i cannot find that option to enable)

Python Debug Console:

Traceback (most recent call last):
  File "/home/gn/.vscode-insiders/extensions/ms-python.python-2018.3.1/pythonFiles/experimental/ptvsd/ptvsd/wrapper.py", line 759, in done
    fut.result()
  File "/home/gn/.vscode-insiders/extensions/ms-python.python-2018.3.1/pythonFiles/experimental/ptvsd/ptvsd/futures.py", line 44, in result
    reraise(self._exc_info)
  File "/home/gn/.vscode-insiders/extensions/ms-python.python-2018.3.1/pythonFiles/experimental/ptvsd/ptvsd/futures.py", line 153, in callback
    x = next(it)
  File "/home/gn/.vscode-insiders/extensions/ms-python.python-2018.3.1/pythonFiles/experimental/ptvsd/ptvsd/wrapper.py", line 1216, in on_evaluate
    expr = args['expression'].replace('\t', ' ')
KeyError: 'expression'

Still debug console stop working after that errors.

print()
Please start a debug session to evaluate 

When i select Copy as Expression i have i lot of errors in developer console as you can see in the attached file.
console_copyasexpr.log

Add to Watch still do nothing.

[brettcannon]

I can verify it doesn't work on Windows 10, but that's because the menu option is greyed out. Either way there's definitely an issue.

[valVk]

The same issue with PHP Xdebug.
Ubuntu 16.04

[Eynorey]

Same thing with Golang and the delve debugger, it's all greyed-out

[karamqubsi]

Same for PHP with xdebug on macos 10.12.6