I've been running AOS 6.1.4.1 for about a month now and I've had to open 2 TAC tickets. I'm running 3 controllers in my lab & 1 production controller (all 3600)
1st Bug:
Configuration>Authentication>L3 Authentication>Captive Portal Authentication Profife: the "Login Page" has a textbox that shows as undefined. Only way to modify URL for CP is via CLI.
2nd Bug:
Configuration>Authentication>L3 Authentication>VPN Authentication Profile: Issue with "default-iap" & "default" profiles. If running a master/local environment & not running all the same 6.1.4.1 code this cosmetic error occurs "Error: Cannot define any other vpn profile apart from default/default-rap/default-cap". This is not affecting me right now, but I don't know if it will in the future. CLI running config looks ok to me & TAC could not find anything
The only reason I installed 6.1.4.1 was to support the newly released RAP-3WN-US instant AP. AOS 6.1.5.1 will probably be the next stable release is my guess.