These take the same amount of time however you open them. Unless you’re opening Cubase for the second time, when it’s much quicker.
As for workflow, is WINKEY+[Num Key], then double-click a file in The Hub really so onerous?
[edit]
The Recents list is only added to when using the Windows Save/Open File dialogue. This is a Windows thing, not Cubase.
As mentioned in the original post, opening from the hub does not add it to the Windows taskbar list either which makes me think it’s a Cubase bug rather than intended Windows behaviour.
The default “Recents” list might only be added to with the Windows Save/Open File dialogue.
However, the Edge browser skips this “Recents” list alltogether. Will create a new issue with the Recently closed tab as it would transitively solve this issue.