I recently upgraded to PowerShell 7.5, where PSCommandNotFoundSuggestion has become a mainstream feature.
Often, after running a successful command I see the message...
Suggestion [4,General]: The most similar commands are:
... followed by no suggestions.
I wouldn't expect this message to display given that a) the original command was found, and b) no suggestions were found.
My question is: How can I fix this behaviour, or disable this feature?
I believe in PowerShell 7.4 you could use Disable-ExperimentalFeature PSCommandNotFoundSuggestion (see here). However, since PSCommandNotFoundSuggestion is now a mainstream feature this method doesn't seem to work any more.
You're seeing a bug, which the powers that be - unfortunately - decided not to fix:
See GitHub issue #20916; the decision there mentions that the issue may be revisited if there's community interest, however.
In a nutshell, the PSCommandNotFoundSuggestion feature was made stable in v7.5.0, even though it depends on another feature that is still experimental, namely the PSFeedbackProvider feature.
In stable / LTS PowerShell versions (as opposed to preview versions, experimental features are disabled by default, so the missing dependency causes the PSCommandNotFoundSuggestion feature to malfunction.
PSFeedbackProvider will become a stable feature in v7.6.0 at the earliest.
For now (except by default in 7.6 preview versions), avoiding the bug requires explicitly enabling the PSFeedbackProvider experimental feature as follows:
# Start a new session afterwards for the change to take effect.
Enable-ExperimentalFeature PSFeedbackProvider
Note that there is no way to disable the PSCommandNotFoundSuggestion feature that I'm aware of.