Base: Form sets date in fields to today

I have a simple table and a simple form. Two table columns should contain different dates. However, after I enter a date and press enter, the form sets the dates in both fields to today. If I enter the dates manually & directly into the table, the form still displays the today’s date.
Help is appreciated.
P.S. I am a complete beginner.

Is the column in the table also a date field? Have you correctly set the data source for each field control in the form? Is the table set to auto-update with today’s date whenever it is changed?