WaitForEnabled (maybe others?) not always properly waiting

I made some assumptions on nested stack traces, and certain methods (WaitForEnabled and possibly others,) improperly throw instead of waiting and then returning true/false.

Need to do a bit of investigation, but it should be safe to remove the exception filters that check for inner stack traces.

Start by tracing WaitForEnabled and any similar methods to understand how exception filters inspect inner stack traces. Investigate cases where they throw instead of waiting, then verify that the affected methods wait and return true or false as intended without inappropriate exceptions.

Written by the indexing model from the issue text.