This feature does not work in the mobile application and it definitely negatively affects the presentation.
Hi @Egemen, thanks for sharing this. I tested this feature, Fix position when scrolling in the iOS App, the Mirror Legacy app and the iPhone app and it works as expected, here’s a link to the public prototype, so you can take a look.
Would you mind contacting us at productsupport@sketch.com and share a sample file? This will be great for taking a closer look at the issue and find out what’s going on. Thanks in advance