Github user prashanthvarma commented on the issue:
https://github.com/apache/cloudstack/pull/756
@rhtyd Here are the screen-shots without and with this UI bug fix:


As pointed out by @nlivens in the previous comment, "The actual Public Load
Balancer provider is derived from the VPC offering, and not from this extra
field "Public Load Balancer Provider". So, this field has no use at all since
it's completely ignored."
The cleaner implementation for this UI tab would be to only list "Public
Load Balancer Providers" mentioned in the selected VPC offering. Moreover,
don't show this tab, if there are no "Public Load Balancer Providers" being
mentioned in the selected VPC offering. Finally, make use of the selected
"Public Load Balancer Provider" in the actual implementation of the VPC.
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