Think this is new...
To recreate:
- Create new rule
- Selection actions to run
- Create condition
- Select humidity sensor capability and device
- Select comparasion (< for example)
- Enable "relative to device" and select second device
- Enter humidty offset (10 for example)
- Select done with condition
- Now look at the condition and you will see "sensor1 < sensor2" with no mention of the offset. I believe in previous version it would display the expected "sensor1 < sensor2 + 10"