Symbology Incorrect for Unique Values on two Attribute Fields

[erica_poisson]

I'm wondering if anyone might have some insight on this issue I'm running into. I'm baffled and wonder if I am missing something really simple.

I'm working with MA 2016 Land Cover/Land Use data. I'm symbolizing by Unique Values on two attribute fields. Field 1 = Land Cover Code and Field 2 = Generalized Use Code. I've grouped values as I want them, but I am getting some bizarre results in my map - a small number of open water areas are showing up as my 'Residential' symbol color. I've checked the attribute values for the affected waterbodies and they are definitely coded as water. I checked my grouped values for 'Residential' and 'Open Water' and they are correct - the affected waterbodies have codes under the 'Open Water' symbology, but I am still seeing orange instead of blue in my map.

Any thoughts?? I'm very confused. I'm hoping I'm just missing something very obvious here. I am using Pro 3.0.0.

Thank you for any help or advice!