I am not sure if we have made changes in that area or not.
But have you logged bugs for the issues that you encountered? If not, then you are highly encouraged to log bugs using http://bugs.adobe.com/flex.
Filing bugs is probably the fastest way to get them fixed. Also once we have a bug report with the test cases, we can provide you more concrete answers.
Flex SDK Team
I wish adobe would integrate the bug tracking with the adobe website, I find creating another account to remember to much of a hastle