Avast on virustotal detected the file but desktop version fail to detect

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As mention Avast on Virustotal first failed to detect files in packed archive.

https://www.virustotal.com/#/file/78c91dc46da2809660e939fa220172bab5c5563f251bc54650d1d62b3b5b0447/detection

After unpacking file is Avast on VirusTotal able to detect it.

https://www.virustotal.com/#/file/61c88864eb4e67f7d4251254215101e6fdd09d6ac6b46972d89e27b61a50c115/detection

However your desktop version for Windows 10. Latest build & signature as of today is not detecting whether it is zip or extracted!.

This is the file sample link. http://s000.tinyupload.com/index.php?file_id=88819775121217819397

I have already submitted the sample to avast lab.

Please advise if Avast will fix this issue.

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After posting this post. And submitting sample, Avast desktop is now capable of detecting said sample.

Could the admin advise why there is a delay in detection if Virustotal engine and other vendor has previously detected this sample previously.

Even malwarebytes detected it previously.