Yes, I am using the variable between two rules, that is why I was surprised that it didn't show anything. Don't believe there is any issue with the variable, it is a simple boolean. I am using it in between two rules so that one can determine if the other rule is running.
As you suggested, I tried updating both rules and I am still getting the same result.
That is: When I click on the Hub Variable name, the loading indicator in the header runs briefly and the screen looks like it refreshes but doesn't change (still displays the one table row with my Hub Variable).
I attached a screenshot of one of the rules that has the Hub Variable "frontPorchLightAutomationRunning."
Just an FYI... I am using this variable to disable the button controls rule when I have a holiday light rule/animation is running.
Yeah the hover is working but when I clicked on the Hub Variable, it wasn't displaying which rules are using it.
BUT... I just noticed that I wasn't on the most current Hub update. When you were releasing a bunch of updates recently, I missed the last few minor ones. I decided to see if that might correct it. After I updated the Hub, it now works! Yay!