I have published a survey using the latest 3.10 version of Connect, that includes a JavaScript file in the extensions folder. Everything works great in Connect. I am opening the survey with a portalUrl parameter in a web browser (tested in MS Edge - 84.0.522.52, Chromium and Google Chome - 84.0.4147.105)
Running developer tools, a 400 error code is thrown trying to access the JavaScript file, with the message "Info file for item not found".
However, I can see the JavaScript file in the item content directory on the Portal server:
Is this just a limitation with the Survey123 website?