I'm hoping someone can assist with a random anomaly. Yes, I realize Web Forms are "archaic", but that's what we're using...

Running 6.2.0 includes reverting back to IPublishedContentProperty interface.

For the sake of simplicity, say I have the following setup:

MyUserControl1.ascx.cs

public class MyUserControl1 : Umbraco.Web.UI.Controls.UmbracoUserControl
{
    void Page_Load(object s, EventArgs e)
    {
        string bodyText = Umbraco.AssignedContentItem.GetProperty("bodyText").Value.ToString();
    }
}

MyUserControl2.ascx.cs

public class MyUserControl2 : Umbraco.Web.UI.Controls.UmbracoUserControl
{
    void Page_Load(object s, EventArgs e)
    {
        string bodyText = Umbraco.AssignedContentItem.GetProperty("bodyText").Value.ToString();
    }
}

When both controls are loaded onto the MasterPage, the following error is randomly thrown on the second call to .Value of the AssignedContentItem. I'm assuming it's due to blocking calls but I haven't found anything similar to this on any thread.

Server Error in '/' Application.

ValueFactory attempted to access the Value property of this instance.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.InvalidOperationException: ValueFactory attempted to access the Value property of this instance.

Source Error:

Stack Trace:

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.18446