Comodo Bug or Design Issue or ...?

Hey Guys,

Windows 10 64 Pro
CFW V10 (proactive config + customization)
Default "Downloads" is my downloads folder
Note - Sandbox setting - "Do not virtualize specified files/folders" - Unchecked

I ran Vivaldi 64 Bits portable in Comodo sandbox i.e rightclick Vivaldi & "Run in Comodo Sandbox".

If I download with browser, downloads dont appear in downloads folder...expected, right?
If I download with Internet Download Manager, downloads appear in downloads folder...bug or design or ...?

I...

Comodo Bug or Design Issue or ...?