Thank you for the report!
We intend to provide better documentation for this on our website, but I'll explain here for now: the reason BugAid doesn't show the total iteration count in this instance is that in order to do so, BugAid would have to re-iterate the IEnumerable. Doing that may have undesired consequences (such changing the program's state, making a call to a database, etc). The only case in which we re-iterate the IEnumerable without asking the user for permission is if doing so cannot have any side effects whatsoever - like, for example, if the foreach target is a known .NET collection such as List or Dictionary. In other cases, "???" will see the total iteration count, and you'll have to open to foreach window and push a button to re-iterate the IEnumerable and see the collection data. You'll see a warning that doing so may cause side effects.
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