Currently Racial population bonuses, government population bonuses, and 100% moral bonuses do not increase your population growth.
Here is the process I used to discover the bug:
(100% morale)
1-Create a race with no pop. growth bonuses
2-Verify that each turn .20 pop. growth occurs
3-Drop taxes down to 0% to increase planetary moral to 100%
4-Leave planet view open when pressing the turn button and the pop. growth still only goes up by .20
(Pop. Bonuses-->Don't Ask)
1-Create a race with the pop. growth bonus of "Don't Ask" (trust me I won't)
2-Open planet view with moral greater than 30% (i.e. so the population is growing)
3-Click the next turn button and population increase by .20
I have also tried this with the Universalist government type with the same results.
My machine specs are:
English Version
Athlon 3200+
Geforce 7800 GT
2.5 g RAM
Hope this helps!
Craig