I have range set to the alpha setting, but all characters are within range. It's currently configured to reduce alpha to about 40% when a character is out of range: no characters in the example image are out of range. (We are fighting the Phoenix Hawks in TK, so we are all on top of each other -- a good time to troubleshoot this particular error.)
For example, both mages "Ries" and "Ledya" are both in range (full alpha) but Ries' health bar is rendering darker than Ledya's. Same with Beric -vs- Asidi. Both Paladins, both in range, both with the same status. Furthermore, Honz's bar display fine in the Warrior group, but improperly in Group 1.
In the example image, this issue is being applied to:
Beric, Clair, Honz, Hraku, Ries,
It's almost as if Unit Health isn't taking over the bar versus the background gradient. I've tried a variety of different gradient textures: all have the same issue.