I will describe the exact steps I went through before I discovered it:
1. in the editor, I placed a BLUFOR player unit with init "removeAllWeapons this" and a supply of FAKs in a nearby container, along with an Alamut launcher;
2. in game, I took 3-4 FAKs and the Alamut from the container;
3. after getting damage, I chose "treat self" in the action menu, and the problem occurs then.