This was a false alarm. Please accept my apologies. No data was lost.
Hi @benaston,
Please send us the design in question attached to a support ticket using the link below, we are here to check the issue.
https://support.shapr3d.com/hc/en-us/requests/new
edit: Let us also know what happens if you open the projects that do not have the thumbnails.
Opening any of these projects reveals an empty workspace.
Please reassure me that you have a backup of this work.
Thanks for answering the ticket, we are checking it.
This was a false alarm. Please accept my apologies. No data was lost.