I'm experiencing some strange behavior with one of my sites on Safari and iOS devices. The browser is showing this console error: Failed to load resource: The operation couldn’t be completed. Protocol error

The page fails to completely load. It shows all the menu items opened (looks like the JS files don't fully load). The page fail to load at all on iOS.   This doesn't happen all the time. If I clear caches (using a different browser), the page will load fine for a while. After some time elapses, I see this issue again.

I'm using a modified version of the theme Thesis (but my version doesn't extend Basis - it's fully contained). I disabled the Color module as I thought that was causing the issue, but it seems like it's not.

Has anyone experienced this issue?