This may be an expected behavior, but today I was working on setting up video embedding. I dropped a sample mp4 onto our phab homepage to upload and it worked as expected. However, I was having trouble getting it to display/embed using the {FXXX media=video} syntax. I looked at the file details and its mime type had been changed to application/octet-stream. This may be intended behavior, but it wasn't clear to me.
{F1706779}
What I think is especially noteworthy is that going into the Files application and uploading a file through the picker behaves differently. Specifically, in our install it threw an exception about not having a configured storage engine (I realize this may be an issue specific to our instance/config, but I would expect the two ways of upload files to behave the same...?)
{F1706777}
Edit:
We're fairly up to date, but here you go nonetheless
phabricator cadac75b82bbed18d52c3ee7ba6d396bff69c009 (Fri, Jun 24)
arcanist 18b27b03fa3d9f2439bf998c5fa2e4f5bd93db16 (Sat, Jun 18)
phutil 8aa8612a094b4dafcf5c461b746a613a1e229b86 (Sat, Jun 18)