I've noticed today after playing FONV that whenever I use a stimpack on Boone via companion wheel, it eats my stimpacks but doesn't heal Boone. It's quite annoying as I tend to almost always play on hardcoe and Boone is one of my favorite NPC's in New Vegas.
If a patch to patch 1.3 comes out, I'd really like this bug adressed as it is due from the patch.