had a chance this past month to view Bob Hopes My Favorite Blond  1942.. and in the Union Hall segment , Bing Crosby,  ( Bob's old friend in the Rio Movies) has a cameo scene with dialogue ..
and his name  is not in the movie credits.,  therefore Uncredited ..

I submitted  ( no votes)  and it is declined  ..  WHY ?  I would imagine if I had even one vote it would have been approved ... 
So again  my theory .. the Invelos data base is  not the best in the world .,
only second best  to over you know who..

I also ticked the box  for cast  (Cast/Crew from: 738329252021

I have had similar things in the past, no votes but quite some information to add to the contribution.
And when the contribution was declined, no info was given about the reason for the decline.

Just a tip for you, if you happen to have some useful info about the movie, like some screenshots with prove of the uncredited cast, then perhaps the contribution will be accepted.

In this case, for the movie "My Favorite Blonde" I did find some screenshots with prove of the Bing Crosby cameo.
Perhaps you can use this info as an extra type of info.





Picture sources from twitter.

Edit: After evaluating your submission, I don't see anything submitted other than the contribution notes. Please fix this and then the contribution can be accepted.

Putting something like 'Adding Bing Crosby's uncredited as a union member – I recognised him in the union hall segment. The appearances is mentioned in this review "the comedy is broad at times, including an uncredited Bing Crosby cameo that comes near to breaking the fourth wall" (https://bottomshelfmovies.com/my-favorite-blonde-1942/) and Wikipedia (https://en.wikipedia.org/wiki/My_Favorite_Blonde)', plus a screenshot if you have one should be enough evidence.