One observation from Diana Studer from this day:
This observation exists obviously, but if you click to see, how many observations of this plant have already been posted you get the answer “none”. which is obviously incorrect!
I have found some more of this miraculous observations in the past.
Do you have a place filter set in the top right of the taxon page?
I’d second that, probably worth checking what filters are enabled. I get 327 for the number of observations.
I have had this happen before in other cases, usually where the number of observations of the species is small and the only available observations are not verifiable, in which case they do not show immediately without editing filters.