"Previous page" button gone in survey within experiment

I have an online experiment that is performed after the users complete survey with psychological questionnaires. The survey was created in Pavlovia, then I added to my experiment using its id through the PsychoPy builder. I have a “start” routine, which lasts 1 second and has unrelated code, and a “survey” routine in which is the pavlovia survey added using its id.

If I run the survey using the link provided in the Pavlovia platform it works fine, but if I run the experiment, which takes me first to the survey, the “Previous page” button disappears.