UiPath Assistant Intermittently dropping connection to Orchestrator-PAC Proxy

When publish code to Orchestrator, notinging that the UiPath Assistant on VMs is not updating the package and we manually have to refresh. However, when manually refresh, receive a download error message and the connection between the UiPath Assistant and Orchestrator appears unresponsive. Proxy is enable with PAC proxy

Even if the documentation point that orchestrator has to be at 2021.4 for using PAC with no resolution of the studio version , after

update the studio version to 2021.4 the issue got solved.