It is unclear whether this is a mistake or not. But I think this should not be!
The fact is that when a user places his ads and uploads his photos, these photos are converted and saved to /oc-content/uploads/temp and if, for example, the user has changed his mind about publishing his ad, and the photos have already been uploaded and then left the site or went to another page, but the photos have already been uploaded to /oc-content/uploads/temp and will remain there forever.
And this is not correct, if the user did not publish the ad and left the site, then his uploaded photos should be deleted, and this does not happen!!!
Why?