Some recently-uploaded files are not available on other wikis. The files show up in GlobalUsage, but are redlinked on pages. The broken files I have found were predominantly uploaded using cross-wiki uploads, but the Commons UploadWizard is also represented. I feel that I've checked enough files to say that uploads from Special:Upload and the upload API are not affected or are affected at a very small rate.
Enwiki links are used for convenience, this issue is known to affect dewiki, itwiki, and wikidata as well.