Dominique,
Yes, I am talking about all-day events with no start/end hour, hence spanning the whole day or multiple full days.
Until short time ago I had them fully visible in the Day widget, using the "Text" as a style of the four that I see available.
Strangely, this morn an all-day event popped-up (in the Day widget), the very day it was scheduled to start, while other all-day events starting in the next days are not shown. Instead, other future events with a start/end time are fully displayed.
That sounded strange to me, therefore I first tried to uninstall/re-install Calengoo, re-link my Google calendar, etc before approaching you and ask for any update or change you might have injected.
Thanks, aldo