The issue with the Real-Time Process Explorer, Windows Event Log Viewer, and Service Control Manager not working on nodes managed by Additional Pollers is a known issue that will likely be addressed in RC2. Alerts not reporting percentages properly is an issue that I'm not familiar with. You may have found a bug in the new Web Based Alert Manager. Please open a case with support so we can track this issue properly and post your case number here so we expedite it.
The AppStack screenshot obscures too much data to understand what is in context. It looks like the screenshot is from the AppStack Environment resource that's on the Details page of one of those objects, but it's not clear which without seeing more of the page. You may want to open a case with support to troubleshoot this further, or provide additional clarity of what it is this screenshot represents, what you think you should see, and what you believe should not be appearing. If this is from the details view of a Node/Host, then this might not be correct. If you're on the details view of the Cluster, or vCenter then it may be accurate.