As a workaround, disable all extensions one by one. If you have Grammarly you can start with that one. Then you can use the Work Portal normally.
1. Enter this URL on Google Chrome's search bar: chrome://extensions/
2. Locate Chrome Extensions.
3. Disable the extension by clicking on the switch. Make sure it turns to grey color and it is moved to the left.
After following the previous steps, you can continue using the Work Portal as usual and the pop-ups will correctly display. You might need to reload the page or restart your browser.