Symfony version(s) affected: 4.4.0-BETA2 (Only version tested, might be happening on earlier versions but not tested.)

How to reproduce

Use debug toolbar to get to the configuration page e.g https://example.com/_profiler/c4498a?panel=config

Note the layout of Enabled Bundles box, loads of whitespace that can be used, yet path/namespace/class names are ... far too much, actually making it very unuseable and unhelpful.

its making

/a/helpful/path/to/some/namespaced/class

into

/a/.../some/.../cla...

Possible Solution
Dont hide so much :)