Years went by and I bought it on videotape, and where the end credits were supposed to be shown, in its place was a blank gray screen, but the instrumental music (Running wild) played.
More years went by and I bought myself another brand new copy on videotape and again just a gray screen with the instrumental music playing. No end credits.
Now, it has just ended on PBS, and just as the words "The end" came on the screen, the "running Wild" music started for a split second, then they faded out completely. No end credits, not even the gray screen. Just went on with other PBS programming.
On TCM, the times that I've seen it, when the movie ended, it ended. It didn't even show the blank screen with accompanying instrumental music played at the end.