Shared spreadsheets don't show in Zoho Start

Shared spreadsheets don't show in Zoho Start

Hi,

I have several spreadsheets shared to me (which are shown in Zoho Sheet's left side panel), but cannot see any one of them from within my Zoho Start's "Shared Docs" pane.
Zoho Start shows only the sheets I have created myself.
(I don't know if this might also be the case with the "docs" or "presentations" since I have none of them shared...)

Is there any known issue about this kind of phenomenon? Anything I can do to get rid of it?

Thank you in advance.