Autocompletion based on PhpStorm meta file information seems to be broken

Autocompletion based on types inferred from PhpStorm meta files seems to be broken. Signature help seems to still be working fine, however, but no autocompletion suggestions are given after a call to such a method with a parameter described in the file.

// No autocompletion suggestions
$someServiceLocator->get('someService')->

// Oppositely, proper signature help still appears at the pipe symbol
$someServiceLocator->get('someService')->someMethod(|)

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