Event Annotation Filter Conditions Are Not Working After ESM 6.9.1 Upgrade

After a recent ESM upgrade to 6.9.1 we noticed that filter conditions in active channels relating to event annotations stopped working properly.  For example, using the condition Event Annotation Stage != closed does not effectively interpret the condition and will still pull back events where this condition is true.  This is affecting some of the workflows we have established.

A support ticket was opened and I was told this is a recently discovered bug (NGS-9761) that is affecting other customers as well.

Is anyone else experiencing this issue and have you found any temporary workarounds until HP can fix the bug?