Triple file request on object element?

Question

HTML

Hey!
I embed the pdf document into the page via the object tag and the chrome debugger shows me the following picture.

3 requests for a document are sent. The first one is canceled, the next two are taken from the cache. After clearing the cache, the first one is still canceled, and the last 2 requests are taken from the server, and the picture remains the same. This is not normal in theory. Or am I wrong? Why is this happening and how to fix it if it's not normal?

Answer 1

serverfault.com/questions/61424/why-are-we-seeing-apache-206-partial-responses-for-pdf-downloads
in short - this is normal behavior, in Adobe Reader, as far as I understand, this is done so that while loading full PDF could be shown to the user first pages. And since your PDF is apparently small, it loads completely earlier than partial requests (they are already taken from the cache so there is no overhead)