Safari iOS 15.5 Not Using Prefetch Cache with LinkPrefetch Enabled

[az8n]

Describe the bug
On Safari iOS 15.5 with LinkPrefetch enabled, links are being prefetched but then fetched again after navigation.

To Reproduce

1. On Safari iOS 15.5, enable LinkPrefetch in Advanced Safari settings
2. Go to optimized demo https://mini-ecomm-quicklink.glitch.me/
3. After prefetch, click on first link

The prefetch happened:

But the content was fetched again:

Expected behavior
The prefetch content is served from prefetch cache (faster than fetching the content)

Version:

• OS w/ version: iOS 15.5
• Browser w/ version: Safari

Additional context, screenshots, screencasts
LinkPrefetch is enabled

[josh-tt]

I see the same thing on desktop safari 15.4 as well with LinkPrefetch experiment enabled. Furthermore, the specs say safari >12 without polyfills. Not sure how that's possible, perhaps I'm missing something. Found Quicklinks while looking for a polyfill solution for prefetch in safari.

UPDATE: Just tried installation on my web server and phone and appears to be works fine, so perhaps it's just an issue with the demo page.

[onlinebizsoft]

@XhmikosR : can you confirm if this libraries works for latest Sarafi by default?