Potential bugs between Galio and Twitch + Windspeaker Blessing Bug for Galio

Recently played a game as Galio. While using Galio's W to heal from an enemy Twitch's passive damage the shield refused to heal off of the passive damage Twitch was dealing even though Galio's W states that any damage against the champion with Galio's W currently on them will cause Galio to be healed, I also tried to heal from Galio's W against Twitch's passive damage while my W was on an ally. The next bug I might have found in the same game was when I used Galio's ultimate ability to provoke the invisible enemy Twitch into attacking me and the enemy Twitch remain stealth-ed throughout the whole duration of my ult while auto-attacking me, me and my teammates could see his auto-attacks but not the enemy Twitch. The final bug I may have found is that Galio's W does not gain any benefit's from the Keystone Mastery "Windspeaker's Blessing" even though you classify Galio's W as a shield, when I placed Galio's W on another ally the ally that had the shield didn't gain any bonus resistances.