Symbols and fill & strokes
In Illustrator 26 (Mac, Big Sur 11.6.1), Symbols (static) now accept fill and stroke properties with the symbol selected (not editing the symbol). Traditionally, they have not been accepting any fill or stroke properties as those are defined within the symbol. These are not dynamic symbols.
Chris, does not happen for me for static symbols on Windows.
Can you share the file with a recolored one?