Thank you for reporting this issue!
There was a problem in an update of the welcome screen which causes the list of recent projects to remain empty.
If this does not resolve on its own after updating to the latest version you can try clearing the following folders:
On Mac: ~/Library/Caches/Adobe/CCX Welcome/
On Win: %userprofile%\AppData\Roaming\Adobe\CCX Welcome\
Best regards,
Alexander