In both developer portal and Enduser portal we have observed screen distortions sporadically. This behavior is very hard to reproduce and we didn't see any errors in the log files when this happens.
Few posts in the PDN suggest that when screen distortions happen ,they observer 404 error in the log files and this happens due to pxDeleteOrphanStaticContent agent. But we have disabled this agent in our application and we didn't see any 404 errors.
Please let me know your suggestions on this.
***Updated by Moderator: Marissa to add SR Details***
***12/06/2016: Updated by moderator: Lochan to close post due to no response on SR and this discussion***
The 404 error seen in the logs is the easiest permutation of CSS/Skin corruption issues to address.
But since you do not see this error, it is a different root cause.
Furthermore, the hot fixes for the DeleteUnusedStaticContentFiles agent which calls the activity pzDeleteOrphanStaticContent to prevent this issue is not relevant to your release, as the corrective logic changes were ported from 7.1.8 itself.
These are some of the most elusive issues to narrow down, and will almost always need an deep investigation in an SR to establish a true root cause.
However, if you are looking to unblock yourselves, a revalidate and save of the skin can often help without much effort and zero risk.