Hi, Today i just restarted my juce and didn’t know what i changed last day from Projuicer Configuration that changed my input output channels for plugin. (Previously there were just two input and two output green pins in plugin filter).
The red pins are midi. You probably have “Plugin wants midi input”/“Plugin wants midi output” ticked in the projucer. Or your AudioProcessor::acceptsMidi/AudioProcessor::producedMidi callbacks are returning true.