When a budget is set to "Custom period" "Twice a month," and rollovers are enabled for categories, the first balance adjustment for a category works as expected and can be saved with any selected date.

However, once an adjustment already exists in the category's Adjustment History, any subsequent balance adjustment defaults to January 1st. Attempting to select a different date does not persist, and the adjustment is saved with a January 1st date instead.

For example, a first adjustment dated August 15th saves correctly. When adding another adjustment afterward, the date defaults to January 1st and the new adjustment is saved with that date.