Slider Marker Issue - Builder

I am trying to create a slider with only ticks on the ends and for some reason the marker does not show up, here you can see the slider properties:

Please let me know what i am doing wrong, thanks in advance.

Hi @neslihansunmaz, the settings seem ok, what version of PsychoPy are you using? Do you see any errors output in the Runner window? Also, is this for an online task?