https://bugs.winehq.org/show_bug.cgi?id=38694
--- Comment #9 from Ricard Wanderlöf ricard2015@butoba.net --- Thanks, yes, I was confused, I thought it was an option that Wine picked up.
Anyway, I can verify here too that disabling the dwrite DLL in winecfg clears up the rendering problem and the application appears to work fine.
I can also confirm that it can fulfill its purpose of transmitting samples to the synthesizer in question (Waldorf Blofeld) when running under Wine, at least as a quick test (have not done any extensive editing operations, just taken a sample definition file and downloaded the samples to the synth via USB).