There is a cache corruption bug that has been reported in a number of places. It seems to be a race condition triggered when window.location is changed while a resource is being fetched. There may be a number of other scenarios that trigger this.
This repo is an SSCCE which reproduces the bug.
Places where this has been reported
- FortAwesome/Font-Awesome#7770
- https://stackoverflow.com/questions/22751758/font-awesome-icons-not-working-in-osx-safari
- google/fonts#1616
This is being investigated at https://bugs.webkit.org/show_bug.cgi?id=194251
- Clone this repo
- Open a file browser and load index.html with Safari. The page will redirect
- Click back button as prompted
Expected behavior - the icon should be shown
Actual behavior - the text is shown b/c the cache is corrupted.
