*.jar files should not be opened like *.zip files
I sometimes share software patches with customers via Box. The files are often .jar... This is the file extension for Java Archives, which are a type of .zip format. However, unlike .zip, they are not intended to be opened by users. The Box interface (desktop at least) previews the files/folders inside a selected .jar file. It is confusing to the user. Instead, these files should be handled as downloads only.