I've recently noticed when I tried smoking coltsfoot while off herb balance, it wouldn't work:

2780h, 2720m, 10p ex-
You remove 1 yarrow, bringing the total in the Rift to 47.
2780h, 2720m, 10p ex-
You eat a yarrow sprig.
2780h, 2720m, 10p ex-
You take a long drag off your pipe.
The plant has no effect.
2780h, 2720m, 10p ex-
You may eat another herb.
2780h, 2720m, 10p ex-
You take a long drag off your pipe.
2780h, 2720m, 10p ex-

There's no difference for smoking faeleaf, works on or off herb balance, but coltsfoot doesn't. Did anyone else notice it too, or is it just me?

I've noticed the same thing. Coltsfoot cures insomnia when off balance (or it used to) but not masochism, etc.

It used to give really weird messages when curing insomnia while off herb-balance as well (this has been bugged):

You eat a bunch of pennyroyal.
You aren't such a complete idiot anymore.
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
You carefully light your treasured pipe until it is smoking nicely.
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
You take a long drag off your pipe.
Your insomnia has been cured by the wormwood.
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
You take a long drag off your pipe.
The plant has no effect.
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
You take a long drag off your pipe.
The plant has no effect.
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
You clench your fists, grit your teeth, and banish all possibility of sleep.
2000h, 3200m, 2900e, 10p, 8900en, 14900w exp-
You may eat another herb.