Large number of app users with Date Observed missing

Another data point: user says they updated date, but still not showing up on website: https://www.inaturalist.org/observations/42660463#activity_comment_4409591

And another:
https://www.inaturalist.org/observations/40213859

User with 198 observations says that the date is showing up in the app, but it’s not showing up on the website.