Unsaitisfied injection dependency exception

[wuhaixing.wuhaixing.gmail.com]

I use OverrideTypeExtension to replace annontation underlying type ,but first deploy time will result to Unsaitisfied injection dependency exception,but after a few retries,(redeploy or restart server),exception gone!

[wuhaixing.wuhaixing.gmail.com]

If I put the bean in the FlashScoped,the exception stay,what's happened?
Thanks for your suggestions!

[wuhaixing.wuhaixing.gmail.com]

Sorry,I just need more times try,It's gone!
But I still want to know why the extension to override the annotation's underlying type failure to do the work sometimes.