Double escaping suddenly does not work anymore.

Hello,
We have WCF Data Service that is configured to use
double escaping according to this article
http://blogs.msdn.com/b/peter_qian/archive/2010/05/25/using-wcf-data-service-with-restricted-characrters-as-keys.aspx
During a long time (a year or more) this solution worked well for us. And suddenly, a week ago, we found that on some our services (in cloud, in out of cloud)
double escaping does not work anymore.
For example, request to our service may looks like
http://service-host/odata-service/ContentTreeNodes('ID-%257BFEE06CEE-F667-45A2-9014-394F4B7CD3B0%257D')/
In sample above we have ID that without double escaping looks like ID-{FEE06CEE-F667-45A2-9014-394F4B7CD3B0}
But when our service processes this request ID becomes like ID-%7BFEE06CEE-F667-45A2-9014-394F4B7CD3B0%7D.
And that is means that .NET (WCF Data Services) infrastructure removes only single escaping and forget (ignore) to remove second one.
We have an assumption that issue probably maybe caused by some Windows security update. Because on some PCs it works well.
Does anybody have similar issues?

Hi,
I suppose you tried to uninstall this patch from Azure VM. If so then yes, it can not be done. Seems it prohibited by MS or at least I do not have answer how to do it.
At the same time I had no such problems with out of cloud PCs.
BWT, we recently found that we do not require double escaping anymore in our service, because single escaping now works well for us. Looks like MS fixed an issue regarding # symbol in URL path. Now if URL has # in some URL path (for example in entity ID),
then single escaped # works well.

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