Selector Cannot detect single UI Element in Workday with Proxy Pac enabled

Dear All,

We are new to UiPath Studio and running a project with UiPath Studio Community 21.10.3 with Proxy Pac enabled office network.

With the proxy pac enabled, the UiPath Studio selector is able to detect all the single UI elements in most of the webpages in both Google Chrome and MS Edge Chromium but not the Workday webpage. It will always detects the whole page of Workday instead of the single Ui element in the page itself. ( Page not found.)
While we tried to connect the machines to another open network without proxy enabled, it works. Any idea for this issue?

Thank you.