valid_url rule from validation not working correctly same as valid_url|required

[crustamet]

Hello guys, i am trying to validate an url link only when it is filled,

i have a input for the URL to validate but i do not want to validate if the input is empty, i only want to validate when it is filled.

i get error from validation that behaves like a required field
valid_url|required

For sure this is a bug.

[crustamet]

Oh i see i have to use permit_empty rule to actually escape this problem.