BTW, that means it’s not even working correctly with SmartThings stock drivers since those switches do not support those events. I guess it’s the same bug I reported for bridged buttons where stock drivers fail to read the max multi-press attribute, or a bug in the button…
I requested almost a year ago to add the Long Press Release event to stock drivers but so far nothing. Cannot be so hard to add a new event to the capability and use it in stock drivers. Custom drivers should not be needed for such basic events.