Symfony version(s) affected: 4.2-beta2

Description
I'm using the new +intl-icu suffix for my translation files.
After clearing cache, everything is working fine in first page call.
But with existing cache, the messages (intl format) are not converted correctly.

It is reproducible with symfony-demo (you have to update to beta2).

First call with empty cache:

With existing cache:

Additional context
I guess the bug is a result of #29220. (@nicolas-grekas)