UI issue - calendar view

Hi,
I am experiencing a visual issue in the Calendar view. Above the calendar grid, an empty box is displayed even though I have removed all advanced filters and view settings. This box is related to a dropdown (picklist) field from my form.

After I select any value from that picklist and save the record, the box appears above the calendar. I have already tried the following:

  • Disabled Show in record description for the field (link to table, edit form header, record audit)
  • Hidden the field in the table view

Despite this, the box still appears (now empty), and it can be dragged and dropped within the calendar, which interferes with normal calendar usage.