Audio file does not play after using the next button

Hello everyone,

I need help with the following bug:
When using the next button to get to the next page, sometimes the audio of this page does not play. The track below the stage plays visibly, but nothing can be heard. Refreshing the page (e.g. via the repeat button) solves the problem.

Have anybody ideas to solve the problem. Thank you in advanced.

Kind regards, Verena