Game Mechanics: Invis song not refreshing faction properly

[Arrisard]

For both Selo's Song of Travel and Shauri's Sonorous Clouding.

Both will work normally when initially cast and for however long I have them going. However, if I do something that breaks invis (clicking on a merchant or corpse, or even clicking the song off from the song window) when it reticks, the invisibility portions is bugged to not actually modify the faction.

I don't know when this changed, and I didn't see a patch note if it was intentional or not, but I know it was working not too long ago.

Example, running around Freeport I would use Selo's Song of Travel, and I am wicked KoS to the guards there. I'd buy something from a vendor, obviously the song would briefly drop, and then retick. The lev, movement speed, see invis portions would all refresh as the song would retick back on. I even get the little parenthesis around my name indicating I'm invisible. However, all of the guards are still scowling when they don't see invis.