Is there any reason for this? Particularly concerning is the possibility that the entire class or parts of its interface are being deprecated. A minor annoyance is that I have to use the Google cache to look at the API.
Is there anything the community should know regarding this issue?
It wasn't intentionally removed - it's likely there was a parsing error in comments and it didn't generate correctly. In the future please report API doc issues in the sticky API doc thread in the Bugs forum.