Browser extension stops working on Safari 15.4 version

I have experienced a similar issue where a number of web extensions stop working on Safari 15.4. A deeper investigation shows that this is likely a Safari issue in breaking the web extension 'tabs' API:

chrome.tabs.create doesn't work when the url is a page that's packaged with an extension. It seems to crash and ruin all chrome.tabs event handlers.

Reproducible scenario:

1. chrome.tabs.onActivated.addListener(()=> console.log('new active tab')) .. Note: I use onActivated just to test whether event listeners on tabs still works.
2. Switching between tabs.. You should see the 'new active tab' printed in the console.
3. chrome.tabs.create({url: chrome.runtime.getURL('/index.html')}) --> a new tab is created. Note: index.html is an html file packaged in your extension.
4. Switching between tabs..

Expect: 'new active tab' printed in the console as usual
Actual: no 'new active tab' printed in the console…

Note: this problem does not occur when the url is a public reachable URL, nor on Safari 15.3 Version 15.4 (17613.1.17.1.13)

Please fix.

Hi, have you found a solution any chance?

For me this happens, even when opening the page manual.

safari-web-extension://6E5A7D9D-1C6E-4DC5-BFA3-E7AD5C9FEE53/testpage.html

When pasting this URL in the address bar, the service worker crashes as well. Is Apple working on this, or is there a workaround?

Seeing the same on Safari 15.5, is there a fix planned for this? Notably I do not see this issue in Safari Technology Preview.