Thank you for reporting this issue! Indeed, the LINQ analysis feature is not supported when "Use Managed Compatibility Mode" is checked, and this is a limitation in the Visual Studio debugger that we cannot fix. We will add a proper warning so that users will have a chance to disable this option and try out the new LINQ features.
Thanks again for bringing this to our attention!
It's frustrating given that we can't use XSLT debugger in VS without "Use Managed Compatibility Mode". What OzCode could improve here would be to specificy in the alert box which feature(s) do not work with this setting enabled, to give the developer a chance to evaluate whether they need the managed compatibility or OzCode feature(s) the most.
Customer support service by UserEcho