1.1.6 bug? Recognition failed for "/rails/info/properties"

After upgrading my app to 1.1.6, I noticed that /rails/info/properties results in the error:

Recognition failed for “/rails/info/properties”

However in a new 1.1.6 app, the same route works fine.

Turns out, if 1.1.6 is present in vendor/rails, this route doesn’t work. If I rename vendor/rails to something else so vendor rails can’t be found, it starts working again.

Any reason for this behaviour? Is this a bug?

Hammed

It is a bug, but I don't expect it to be fixed in the 1.1.x branch.