SF symbol effects don't work unless font modifier is applied

why do I need to set the font of an image of an SF symbol to get the effect to work? This should be a bug, it's bad behavior. Xcode 16.1 iOS 18.1, so frustrating.

for example: this works

Image(systemName: "arrow.trianglehead.2.clockwise.rotate.90.circle.fill")
                        .symbolEffect(.rotate, options: .repeat(.continuous), value: isActive)
                        .font(.largeTitle)
                        .onAppear() {
                            isActive = true
                        }

but this does not animate, which makes no sense

Image(systemName: "arrow.trianglehead.2.clockwise.rotate.90.circle.fill")
                        .symbolEffect(.rotate, options: .repeat(.continuous), value: isActive)
                        .onAppear() {
                            isActive = true
                        }

its the same if you use a simple setup and different font size, and whether font is before or after the symbol effect

Image(systemName: "arrow.trianglehead.2.clockwise.rotate.90.circle.fill")
                                .font(.headline) // only works if this line is here
                                .symbolEffect(.rotate, options: .repeat(.continuous))