I'm developing MV3 extension. Safari 16.4 introduced support for modifyHeaders, but Safari 18.5 refuses to modify headers when request is done through fetch. chrome.declarativeNetRequest.getEnabledRulesets() show the rule being loaded, but the Origin that I'm trying to modify is still unchanged. However, Safari will modify headers if the request is done through chrome.runtime.sendMessage (script) / chrome.runtime.onMessage.addListener (background.js)

Solution: install Xcode 16.4 RC and iOS 18.5.

Still happens in Safari 18.5

xinnyuan's reply is correct, but the command shouldn't include line break: sudo ln -sfn /opt/homebrew/opt/openjdk/libexec/openjdk.jdk /Library/Java/JavaVirtualMachines/openjdk.jdk Worked for me in macOS 15.4

Fixed in 18.4

reported in FB16234659