[fixed]Player damage reduction & planeswalkers

Describe the Bug:
Cards that reduce the amount of damage dealt to a player also reduce damage dealt to planeswalkers that player controls. Tested this with Guardian Seraph, Urza's Armor and Battletide Alchemist.
Which card did behave improperly ?
Damage reduction OR Planeswalkers
Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
JOU v1, duel
What exactly should be the correct behavior/interaction ?
Cards that reduce the amount of damage dealt to a player don't reduce damage dealt to planeswalkers that player controls unless it's explicitly stated that damage dealt to planeswalkers/permanents that player controls is prevented.
Are any other cards possibly affected by this bug ?
It's possible that this also occurs in conjunction with prevention spells like for example Solitary Confinement, Personal Sanctuary, Heavy Fog or Riot Control.
Cards that reduce the amount of damage dealt to a player also reduce damage dealt to planeswalkers that player controls. Tested this with Guardian Seraph, Urza's Armor and Battletide Alchemist.
Which card did behave improperly ?
Damage reduction OR Planeswalkers
Which update are you using?(date,name)Which type(Duel,Gauntlet,Sealed Deck)
JOU v1, duel
What exactly should be the correct behavior/interaction ?
Cards that reduce the amount of damage dealt to a player don't reduce damage dealt to planeswalkers that player controls unless it's explicitly stated that damage dealt to planeswalkers/permanents that player controls is prevented.
Are any other cards possibly affected by this bug ?
It's possible that this also occurs in conjunction with prevention spells like for example Solitary Confinement, Personal Sanctuary, Heavy Fog or Riot Control.