Non-working talisman sets

[MrMadMan]

So I was fooling around with talis setups for some of my chars, red Wickeman and Pharao Eddie in particular.
Since both their damage scales with DEF I thought Iron (DEF +15%) and Stone (DEF x1% of HP) sets would do well.
Aparently none of those two sets adds any defence what so ever?

With 6 talis equipped (2 iron 3*, 2 stone 3*, 2 guardian 2*) I get a grand total of +96 DEF

Wickerman (5* lvl 58)
current base HP: 5827
current base DEF: 713

Iron 2p set: +15% = 106
Stone 2p set +1% of HP = 58
Expected DEF: 877 (+96)

Think I have read something about Stone not working but nothing regarding Iron.
Am I missing something here?

[Reeb99]

Supposedly they work during combat, but the bonus display on the stat screen is bugged for a few sets. I have a Stone set, Iron set, and Guardian set on my Wicker Man, works pretty well.

[MrMadMan]

Thank you for the info, gonna test this in combat then