I have one group which has been diligently bombing Chinese ground units for about the last 12 months. I was looking over the pilots and noticed they are gaining in NavS as well as GrdB and Defn. I checked several other units and they are only gaining experience in Defn and Ground Bombing. We are playing DBBs with stacking limits and reduced cargo. We are using the latest beta patch as well. The one from the 25th.
Pilots flying 12 months and only 41-43 exp? IMHO screenshot show newbie pilot withdrawn from reserve in last month. So their NavS gained in train school indicated as last gained in current month.
Also see on screenie - only one pilot get raise GrdB and Exp skill. That mean not all pilots flown even a last mission ( i have more gain skills per that amount pilots each mission).
ANd one pilot had blank GrdB/Def skill - that mean he fresh and never gained tha skills (primary for LBA in ground attacks).
So summary - pilots on that screenshot wihdrawn from group trained in last month pilots in NAVS skill (it why their NavS more then Exp) and partially in GrdB (a few missions before or week or so training).
P.S. Look on Mission counter 2-4-5 missions. Definitely not 12 month flying.
I think this was actually a Chair and Keyboard issue. I bet I pulled the pilots from Any and got some which were already trained in search. I am usually very careful about this.