Someone who has added some additional fields to their PIREPs in dropdown format needs to see if what I've observed happens to them.
Select a PIREP where any of the dropdown entries are other than the 1st entry in the dropdown. Go to edit the PIREP and see if it hasn't reverted to the first selection.
For example, I have a field for flight conditions, IFR,VFR,MVFR. If I enter VFR when filing it, the information is correct, but if I edit it, the field has reverted to IFR so when I save the edited PIREP, it says IFR even if I was only editing another part of the PIREP.