Won't fix Navbar graphic glitches with Safari on iOS

[Moshe1010]

Affected version

2.2.10 Patch 1

When scrolling a page, a white line appears on the top the navbar menu. Tested with iPhone 14 Pro, iOS 16.0.2

View attachment IMG_0274.MOV

 

[Nicolas FR]

I can't reproduce this on iPhone 11 / iOS 16

 

[Moshe1010]

I can't reproduce this on iPhone 11 / iOS 16

Just tested with an iPhone 8 Plus and iPhone 13 Pro. I can reproduce this in all devices. You need to scroll up and down sometimes fast and sometimes slower. Try at least 10 times and you will see it.

 

[Dad.]

This has been here a while, just has to do with subpixels and how fixed position works on various device screens. Position sticky, I wonder, might have a few rendering quirks in iOS safari, Ive noticed as well.

Likely best to ignore as I think XenForo is simply using this API and while they could hack it by offsetting 0.5px/1px or by adding a bg behind it, eh.

 

[Chris D]

There are some changes coming in the future but for now I think we have to live with this.

We mitigated it somewhat in a previous version but admittedly it does crop up occasionally.

But the theory about subpixel calculations is likely correct as I've seen similar behaviour on other sites that do not run XF.