Actual command not found, wanted to execute *******:peekReferences

[php4fan]

• VS Code Version: 1.100.2
• OS Version: Manjaro Linux

Steps to Reproduce:

There are no steps to reproduce (that I know of). From time to time, randomly, this happens, for example when clicking on "N references" above a PHP function definition, or ctrl+clicking on a function call, it doesn't work and this error pops up:

Actual command not found, wanted to execute devsense:peekReferences /80387

When this happens, all subsequent attempts will keep failing with the same error, until I give focus to some other application and go back to VSCode, then the issue disappears.

In my case this happens with the DEVSENSE php extension, but other users have reported the exact same issue (except for the extension name) with other completely unrelated extensions:
DEVSENSE/phptools-docs#659 (comment)

Actual command not found, wanted to execute roslyn.client.peekReferences /445

I see there are a number of similar reports that are closed as fixed:
#198411
#170117