My guess is no, but wanted to validate. The PPT team is interested in using Proof since it prevents users from editing the actual PPT, but asked if transitions were able to be validated in the tool.
From my experience, no, proof does not allow you to see transitions on PPT slides. Because proofing doesn't render files in their native applications (in this case, Powerpoint), the features available in those applications aren't available when proofing.
