So I will treat this as two different issues then... vSphere vCenter Web VM Console vs. vCloud VM Console
Interesting development...
On my Windows7 test system... I upgraded my IE to IE11. Noted that IE11 requires a proxy pac file to be served via HTTP/HTTPS now vs. a local file. I made that happen. I also removed my 5.5 Client Plugin and rebooted. I logged into the web client and reinstalled the Client Plugin. And the console pop out worked! I didn't see a mouse pointer though, but I logged into the VM console and hot-keyed around a bit. I am testing from a VM running on my Laptop though (bridge mode). Doing some more testing Chrome and Firefox on my MacBook worked too (not as certain when that changed) to open a console via vSphere Web Client.
Chrome & Firefox just open a window and spin on my Windows7 test system.
I saw this message in the logs:
2014-03-19T14:21:13.521-04:00| vmrc| I120: PREF Optional preferences file not found at C:\ProgramData\VMware\VMware Remote Console\config.ini. Using default values.
Is there anything I can do with this config.ini file to maybe make this work?