"I 've made a simple MP mission and I 've spotted a strange thing after respawning as a team leader, engineer or explosive specialist - they still have grenades in their inventory but there is no possibility to throw them. I also found out that when I drop a grenade from the inventory on the ground and take it back I can now throw them as usual. Anyone else have this bug?..."
addIcted is the original Author of the above
I can confirm that the Squad Leader, Marksman, Auto rifleman, Medic and Rifleman are NOT affected. They can throw grenades after respawn as usual {F19163}