Nearly useless skill is working as intended? That seems odd. Here is a video of the useless taunt, just to make everyone is understanding properly.
Again, the way this works currently is that When L3-37 gets prepared on her own, she gets taunt at the beginning of her turn, but loses it at soon as she takes her turn, in essence, the only way for this to be somewhat useful is if someone else gives her prepared, currently only young lando and young han can do this. However, if they do give l3-37 taunt, and she takes her turn immediately after them, guess what happens? The taunt expires!
It gets worse! I just remembered, that of the two that can give out prepared (if they're already prepared, and their ability is up), if you happen to use lando, that less than 1-turn taunt will also inconveniently negate lando's two-turn stealth bonus.
Here's a video showcasing this ridicoulous mechanic in action. (without anyone giving L3-37 prepared). There is approximately a ~15 second delay at the beginning.
https://photos.app.goo.gl/jQCfedKHbYLJ463r8