issue-viewer-sticky-header shows on horizontal overscroll

[david-cako]

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When overscrolling horizontally on macOS Safari, the issue viewer sticky header shows up underneath the full sized issue title. Just FYI, I'm not sure that it's supposed to do this.

Safari Version 26.3.1 (21623.2.7.11.7)
macOS Tahoe 26.3.1

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[ryanjordan11]

Yeah, that's definitely a glitch Safari's been flaky with sticky headers forever, especially on macOS Tahoe.

The issue viewer (GitHub's, right?) has that full-title bar up top, then a sticky one below for tabs/actions. When you overscroll horizontally like dragging left/right on a wide table or code block, the sticky header gets shoved under the title instead of staying layered right.

It's not "supposed" to it's a rendering hiccup.

Safari's z-index + scroll handling goes wonky on overscroll bounce (that rubbery edge thing), and Tahoe 26.3.1 didn't fix it.

Seen similar overlaps in other sites toosticky navs drifting or hiding under content.Quick workaround: zoom out a bit or scroll vertically first to reset layering. Or just use Chrome if you're debugging a lot.

Apple'll probably patch it in 26.4, but yeah classic Safari bullshit.

[david-cako]

The issue viewer (GitHub's, right?) has that full-title bar up top, then a sticky one below for tabs/actions. When you overscroll horizontally like dragging left/right on a wide table or code block, the sticky header gets shoved under the title instead of staying layered right.

Here's a screenshot. Seems like whatever handler is looking for scroll position shouldn't actually be handling horizontal scrolling to show this header. Maybe there's another project tracker view where this makes sense.

Classic Safari bullshit, but it's the one that my computer comes with :)