Homey Heating Scheduler stops firing after update

After any homey update to my homey pro mini the heating scheduler stops firing until I restart the app. It is being used with vThermo. No errors it just does not fire. Manually restarting the home heating scheduler app fixes it.

You can see here the schedule fires until 3 days ago. It should have fired twice after the update but it didn’t fire until 2 days ago when I manually restarted the app. This seems to happen at every software update.

At first i thought it was due to the update straddling the schedule so i moved the schedule so there was no overlap with updates which seem to happen reliably between 0200 and 0330. But that made no difference.

What am I doing wrong ?

Thanks