The black out model is suppose to work as follows.
There are two types of blackout.
1. Unconsious black out (UBO)
2. Vission black out (VBO)
when in VBO, you still have complete control of your plane.
When in UBO, no controls are operational.
As long as you do not completly black out, I.E. never have VBO you should never have UBO. (except for pilot wound).
Once you enter VBO a fatagie factor starts rising, If you reach 3 secs of fatagie, you will enter UBO, UBO last for 10 secs.
If you did not reach UBO, and are not currently in VBO, Your fatagie factor recovers at 0.1 per sec, I.E. if you were in VBO for 1 sec, it would take 10 secs before your fatage factor went back to zero.
So to answere your question, if this is what is happening to you,
it is not a bug, if you are having somthing different please describe it.
HiTech