I can kind of confirm this bug although I'm finding something slightly different. I can't get the fee field to apply unless I change the field settings within the Specific Event away from Default. I am using 2.7.4 (updated from 2.7.3).
Steps to reproduce:
1) In backend, create a drop down field titled Test Fee.
2) Apply values of 10|20|30 with selection limits of 0|0|0
3) Check Fee Field and apply fees of 10|20|30. Fee type: Amount.
4) Default Settings: All Events-Yes, Show-Individual, Required-Yes, Group Registrations-Each Member
4) Save field
5) In frontend, go through registration form as individual and make selection in Test Fee field of 10, 20, or 30. The expected fee is not added.
6) In backend, select the particular event and then select Fields.
7) For "Test Fee" in "Used for this event?", select "Individual" (or "Both"). Something besides default.
Save field
9) Go through registration process again and fee is applied correctly.
In doing this testing with 2.7.4, I can't get a fee field to work unless I go into the individual event and change away from the Default option for that particular field.