Grenadiers had their damage nerfed, their accuracy slightly buffed and their rate of fire slightly buffed. This could be what you are experiencing. I've noticed Grens performance vs cons to be worse off than they were before as a result of these changes (especially if the opponent is using con bulletins).
It could be that those changes on paper made no difference but in practice made some small difference because of other variables like, less reaction, inf movement, etc.
Its also a lot easier for cons to use molotovs vs Grens rifle grenade. So the Gren vs con engagement is pretty annoying right now. The problem is you have to move to dodge the molotov, but as soon as you move you've lost the engagement due to lost accuracy and losing cover. Whereas for cons it's very easy to avoid rifle grenades (just stay close).
Whether this is a serious balance issue remains to be seen, because there are a lot more factors impacting balance than just these two units' engagement.
I think Molotov can play into the hands of a good German players because you can almost always expect them to come close, giving you the advantage if you are in a good defensive position. By the time they reach you you already softened them up and that's when you rush into the conscripts denying them the ability to throw the Molotov and finishing off the fight quickly.