Symfony version(s) affected: 3.4.41

Description
Since b819d94 some form field errors have been hidden.
How to reproduce
I am able to reproduce when using property_path option set to field to another object and form_rest. Attaching reproducer symfony-demo.zip

Go to http://127.0.0.1:8000/en/admin/post/1/edit and hit submit. Field "author name" should show error, but doesn't. Web profiler toolbar does show form error.

cc @xabbuh