When I put the Mini cart widget in the header and set the Slide up after (px) option in the header settings, there is a small problem in the front-end while scrolling.
When we scroll up, there is a gap (1px) between the header and the top of the browser, which I hope you can understand in the video below (I point to it with the mouse).
Please note that in order to reproduce this bug, the following two things must be executed.
1- Use the Mini cart widget in the header.
2- In the header settings, set the Slide up after (px) option. For example, on 200
I really don’t know why. But if you scroll the page a few times, you will definitely come across it. Please note that this interval will be visible when you scroll up the page.
I looked into this further. This bug seems to occur when:
1- Mini cart widget should be present in the header.
2- In the header settings, we have used Scrolling box shadow.
I came across something new that might help you track down and fix this problem. I experience this bug only in Chrome browser (Windows). I just tested this in firefox and there were no problems. But I can still reproduce this bug in Chrome browser.