The easiest way I found to workaround the issue is to use Robert's Enhanced widgets. It's working very well with a few customizing to bring it to your needs. Yes it needs to rewrite some XML's but it's worth it, imho.
I can't wait a bunch of weeks for the next release of the viewer for just a recompiling with the corrected code if I understand well. I'm lonely working on building / developing a small city GIS from scratch and every minutes counts. Nonetheless, if developpers succeed in convincing my direction to gently wait for me 'till 2.5 is released, they're welcome ! 😉
I will need to begin to approach Flex environment as gaining a bit of independence in the future will be a must.
Have a nice day, All.