Slider marker not visible online

I’ve just added a slider with a 1 second delay to my template file.

https://run.pavlovia.org/Wake/brookes-template-2020/html

I used:

Each Frame

if slider.getRating() != None and sliderClick==0:
    sliderClick=t
elif sliderClick == 0:
    pass
elif t > sliderClick+1:
    continueRoutine=False

The slider component is set not to force the end of the routine and I have sliderClick=0 in Begin Routine.

This also requires the code to be switched to Both after the initial translation so you can change null to undefined in the JavaScript.