I’ll try this on my Homey’s. However, if this is true, this is still a Homey core issue/problem. As said, the apps receive an integer from Homey core as an argument to the trigger flow. If this integer is from a number directly used in the flow or from a variable which Homey core has read and passed along to the flow, has the apps no clue about.
So still, if you find problems/issues with variables in triggers, contact Athom support.
Screenshots of my flows:
