I also reported to the devs, that the hit detection is somehow more bugged in FH2.4 than it was in the previous version 2.3. Don't know, whether they are looking into this problems though. For me it is very important and one thing, the players on the servers are complaining about very often. Especialy alot of bullets from the hendheld weapons (rifles, smg's) hit the target but don't count. This isn't a problem of the BF2 engine, it is a problem of the current state of FH2. In other BF2 mods and in BF2v I don't have these annoying hit bugs up to this extent.
The tank system especialy the angle mod is reworked and tweaked IIRC. The PIV F2 actualy penetrates the Crusader from the front - it doesn't bounce off - but the damage detection is somehow bugged and I need 2 or 3 shots from the front. The Crusader isn't a heavy tank, but on the NA maps it feels like this. The special ammo of the PIII is useless and doesn't make noticible damage on the Sherman from the side or rear - also in a perfect angle. I have to stick my gun in the ass of a Sherman to make real damage and this feels odd especialy with the PIV F2. Crusader on the other hand penetrates AND! kills the PIV F2 with ease from various ranges. Aberdeen is senseless to play, because you can't use the special ammo of the PIII. Normal rounds can penetrate a Grant from the front - the PzG40 can't. So I don't know what these rounds are ueful ingame.
On the other hand the allied tanks on the Normandy maps could use some tweaks especialy the Jumbo. It is quiet useless as it is now. It simply gets oneshot from the front by several tanks - the Panther can somehow kill it with a shot at the tracks from the front. And please don't tell me now, that the tracks aren't hitzones. Infact you can kill a tank from the front by hitting the tracks. StuG IV on St. Lo is a good example. Panther gets shot like this also in some situations.
The Cromwell has the bug, that the 88' rounds from the Tiger bounce off in alot of situations. Other german tanks have no problems though, what seems to be a bit strange. APC's and smaller vehicles like the Kettengrad can eat AP rounds with ease. AP rounds bounce off from the tractor for example.
Devs, please take look at these problems, since these are the basic for an enjoyable experience. But sometimes I am near to rage quit with these problems - and my internet connection is very good.