Reproduce:

• Create a process instance report grouped by date
• Select the interval to be automatic

Observed:
If the difference in date between the first and the second entry is big for example 1 month
The formatting of dates will be by month e.g Jan 2021, Feb 2021, ...
if the third entry in the table is in the same month of the second entry. In this case, the dates in the table for the first three rows will be for example, Jan 2021, Feb 2021, Feb 2021
This is confusing because we do not know the difference between the second and the third entry.

Expected:
The formatting is determined based on the smallest difference between date entries in the table.