Description of Bug Experienced:
Cloistered Cleric Level 5, Sun/Healing. Casting Cure spells and Searing Light from the spellbook, both at the early level domain versinom, as well as the normal level spellbook version (cure moderate lv 1 vs 2) and neither version offers a spell refund. I have tried with Divine Favor both active and inactive, and there has not been any refunds. My Piety is below 50%, but I don't see anywhere whether that is a factor, but mentioning it in case it is.
Steps to reproduce the Bug:
Rested, casted full suite of cure spells in all levels received, both with and without Divine Favor active (do not have access to divine power at this level). None of the casts have offered a refund.
Expected Result:
Domain spells to be refunded at least once in all of my casts. I understand it's a chance, but the odds of them all failing is low.
Actual Result:
Spells slots consumed, no refund triggered despite high percentage chance each time.
Screenshot(s)
https://gyazo.com/5c0021a2d85d94e9ad3b40f5660f7748
https://gyazo.com/b3c3609fb63a93ff74f28127b6a2c7a3
Additional Information/Notes