Classic UI page is frozen, with progress bars on screen until refresh/reload

Products

• Clarity PPM On Premise

Issue/Introduction

Clarity UI page in Classic gets frozen, the display is different from usual display, it has progress bars and appears frozen/stuck

After review, of the sessions all is HTTP 200 and no related errors in the logs.

Environment

Release : All supported Clarity releases 

Resolution

• This is an issue for which we don't have the STR and it's very intermittent. It's client side issue.
• It has to do with the ajax use in multi-portlet pages where ajax callback isn't getting called properly. 
• Advise the users that when it happens they must refresh the page or reopen Clarity.
• This is not a "Processing" or "frozen" page, it will never render more than that, this is the actual Clarity theme used when this issue happens.
• Ask the users to note any specific actions they follow.
  • Does it happen more with a certain browser?
  • Does it help to work say outside of the office network or via VPN?
  • Also, if they access pages with multiple portlets that can be configured, advise to reduce the amount of portlets per page and see if that helps reduce occurrence.