Well unfortunately this won’t solve my problem fully. In this case the sticky menu will be disabled at all if the user views it with mobile. However I would like to disable it only if the mobile menu is in opened position.
Answer to your question:
It is connected with the sticky menu. In default the up-to-the-top class isn’t displayed and then I used the .is-sticky .up-to-the-top selector to set the display value to block. Hope it helps you out! 🙂
Also waiting for better solution for my original question.