Was it intended that leaving the sampler set to "default" would use no sampler? [SD 1.5 model]

[CalculonPrime]

I noticed that with my favorite SD 1.5 model, Absolute Reality 1.8.1, I get clown faces unless I change the sampler from "default" to something else - "DPM++ 2M" works fine.

Was that the intent? Not the clown faces, but not using a sampler by default?

• Promp: "Natalie Wood", 512x512, No sampler (default)
  
• Prompt: "Natalie Wood", 515x512, DPM++ 2M
  

[vladmandic]

default means whatever is set by model author. which for sd15 models is typically old-schoold ddim. it doesn't mean no sampler as that would result in absolutely nothing. and you're not getting clown faces, you're getting under-developed image since those samplers need more steps to resolve.