Since my latest run (~2 weeks ago), the Codeception runner is suddenly hanging strangely:

• Sometimes, in the middle of the suite, it just stops with message "COMMAND DID NOT FINISH PROPERLY."

• Sometimes (at another test), it crashes with:

  PHP Fatal error: Allowed memory size of 1073741824 bytes exhausted (tried to allocate 20480 bytes) in ...vendor/symfony/var-dumper/Caster/ClassStub.php on line 52

  However, the memory_limit in my php.inis (for CLI and FPM) is 3000M. So where is the 1G limit coming from?

This is not caused by the tests themselves, cause when I run just the affected files alone, everything's fine.

Any ideas? Is somebody else experiencing this? Were there recent changes regarding memory management (couldn't find anything)?