If you want to use Juce8 what I do is I build Hise on Juce6, export the plugin, change Juce modules with a simple batch file and recompile with the batch file that Hise created. Then change back.
Def not ideal, but it's a working workflow when you need Juce8.
@dannytaurus Thanks for suggesting and sounded pretty promissing tbh. However after manually changing the code for this, recompiling hise -> Export plugin, it still fails silently.
@boim98208 the circles are only hidden if you enable the complex group editor as they don‘t make sense anymore when it‘s enabled. If you don‘t use the complex groups then it should still be there.