Happened to me this evening, while fighting with some random sorc my healing ward suddenly stoped to heal me. I have tried to scuicide, reloadui, remove and place again the skill on my bar. Nothing worked, after like 5 minutes everything went back to normal. Here is a vid how this looked like when it didn't worked.
https://youtu.be/lBVWCpTrvAA
So... Shadow image not working in some areas at all, cloak broken by ballistas and trebuchets dots and now healing ward randomly not healing at all? I'm impressed with each day more and more ZOS.
@ZOS_GinaBruno
I'm done with this game because of ZOS pushing us into Vengeance, because they don't know how to fix Cyrodiil.