Filezilla and the trash

Filezilla took a lot of time lately after I gave the command to delete a local file or directory. Like ten seconds before the file or directory was deleted. That is really unacceptably slow, so I fired up sysinternals procmon to see what was happening.

Filezilla turned out to be browsing through my trash stuff before deleting the file which I requested to be deleted. There were really a lot of items in the trash, so it is obvious why Filezilla became so slow. I emptied the trash and Filezilla was happy again.

Less obvious is: why is Filezilla browsing through my trashed items? Or is it a system "feature" for which Filezilla cannot be blamed?