On 
, heal and shield power doesn't increase her heals and shields.
Final heal and shield power is max lvl + ap scaling without items heal and shield power buffs.
Rune Revitalize works!
It doesn't matter how much heal and shield power buffs you got, it won't count at all.
Bug exists on both basic and star guardina skin in all of my games since the newest patch.
Screenshots: https://ibb.co/iYzHx6 https://ibb.co/dT3zAR
AnataBakka1 votesdid you actually try shielding someone and see how much damage it negates? The tooltip doesn't show the increase with heal and shield power, afaik
Groto1451 votesYes, we tried it out, it says the same on them ( no increase, before last update it showed increaced value) and it only shield showed value
AnataBakka1 votes"before last update"? see this https://boards.euw.leagueoflegends.com/en/c/bug-reports-eu/qpFdqpeu-721-janna-e-does-not-increas-with-mikael patch 7.21. I had already tested it, took mikael, went under turret and shielded more damage
Groto1451 votesYes, with last update everything was perfect- it showed increased value for every combination of items on tooltip and on shield icon when you shield somebody and shields correct value also. Now, it shows and shields and heals only max lvl + ap scaling. Redemption says it heals 370(lvl18)+ 370 x 3 x 0,45(revitalize,ardent,mikael and redemption) which is 870 but it heals only 370+370x3x0,05(from revitalize)=426 which clearly means it doesn't take items buffs into account.
AnataBakka1 votestry other champs with different shields/heals and see how they behave