Our app recently started crashing when unsubscribing from Lightstreamer on the Lightstreamer iOS Client function,
-[LSSubscription isActive]
. The last line of the stack trace following this is

Looking at the changelog of the iOS client library, the release notes for 4.1.2 state that

Fixed race condition that under rare circumstances could have caused a crash when closing a connection that was actively receiving data.
Could someone please confirm whether this crash is caused by the mentioned race condition in the release notes or whether it is something unrelated?