XCode Version 13.0 (13A233)

Problem:

class MyPlugin: public Plugin
{
...
private:
    example_namespace::TEST<sample, MAXNUMOUTCHANNELS> f[k] = {};
...
}

Reference to ‘sample’ is ambiguous

Hmmm, OK, Click Jump to definition:

using sample = PLUG_SAMPLE_DST; // from IPlug2Constants.h - look good

Version 13.0 (13A233) - I think this is the reason, something has changed because W10 VS2019 - OK

any ideas?