Bug - Image shown is different than $expectedCode

[linaori]

I have no idea what exactly causes this, but some times when testing, I notice that when I fill in the image correctly, I have an error saying that it's invalid.

The $expectedCode isn't equal to $form->getData() and mostly happens after testing the same form a couple of times. I can only fix this with a hard page reload or a manual press on "renew". The return is not null, it's an actual different code than show in the image.

My configuration:

gregwar_captcha:
    quality:          100
    distortion:       false
    height:           65
    width:            270
    reload:           true
    as_url:           true
    interpolation:    true
    background_color: [255, 255, 255]

[linaori]

it seems like I have posted this in the wrong section, my bad.