This seems to only be affecting a specific element on our system (Protocol: Bridge Technologies VB Probe Series, v1.2.0.24). But when using an Alarm Condition for this element, it doesn't work if the condition is referencing a Display Index column (I've confirmed it works on several other columns, including the Primary Index).
Is this a bug, or is there something special about Display Indexes? Or could it be because of the special characters in the VB Probe index (:/-)?
To illustrate here are the settings that don't work:
And these settings do work: