I don’t understand: if the plug-in reports mono as it’s default layout then you can either respect that or easily override this yourself. In your host, simply check if the plug-in supports stereo and switch to stereo if it does.
I’m trying to update my host to the latest version of juce without changing the behavior of any of my users projects.
With old juce, if a plugin reported itself as mono default (like GLow), it still ended up as stereo somehow. Just wondering if there was a way to still get this behavior or what the behavior was. Did it set all plugins to stereo?