potential security vulnerability or a bug

Description: I noticed an issue where renaming an empty file in Dropbox results in the creation of a JSON metadata file. This JSON file seems to contain information related to the file preview, even though the file itself is empty.Steps to Reproduce: Create an empty file in Dropbox i chose to make a empty paper doc file Rename the file in the dropbox dashboard into .sql extension (i only tested in .xml and .json and sometimes they give different results like a binary file. observe I am a Software Developer and Tester and I like digging around, please don't think I was trying to hack,  I do this for fun and I report my findings, Always.  Thanks.