2.4GHz-only-G configured rate bug

Here’s an interesting bug. I have reproduced it with two sets of hardware on #3. All three units are running at least 2.8.21

#1_______________#2_____________________#3
|AP| —5GHz— |Station - AP| —2.4GHz-only-G— |station|

When #2 AP is set to 2.4GHz-only-G AND rate is configured to 6mbps max, #3 will connect and immediately disconnect repeatedly. If #2 AP is set to default, then everything is ok.

Has anyone seen similar?