The same value in a date column seems to sometimes be treated as a date (in formulas), and sometimes be treated as not-a-date (in calendar view).
I have a date column which references another date column for its value (basically, the start date column value is the previous row’s end date column value). This column’s value works correctly in date formulas (e.g., +Days(1)), and the column isn’t giving me any errors for having an incorrect value there, so I assume it’s actually a date. However, the calendar view of the table wouldn’t work with that column as the start date until I added a .ToDate() to end of the formula generating the column values. I assume this is a bug?