after onload, gets our mobile menu button to disappear. The webshop is ateliergusto.de. The theme is Split. I suspect, if it could have a relation with css, but was not able to find something. I thought so because my observation is, it happens with the higher mobile models. That's why I thought, it can be related maybe with a screen resolution definition. I mean the css could behave as it is a desktop device, but the desktop menu gets also not appear. Or any js is making it disappear.