Viewport blacks out with small square around cursor

@colin

Hoping you can help with a rendering issue I’m experiencing on SketchUp 2026.

Setup:

  • MacBook Pro M4 Pro
  • SketchUp 2026
  • New graphics engine (Fast Feedback off)

Symptom:
When I activate any tool — specifically tested with the Rectangle tool and Tape Measure — the viewport blacks out entirely, leaving only a small square visible around the cursor. It also triggers intermittently when moving the cursor from a floating tray (e.g. Styles) back into the main viewport.

What I’ve already tried:

  • Toggled Fast Feedback off - no change
  • Confirmed I’m on the new graphics engine - I want to stay on it as I had ambient occlusion and environment lighting working in 2025

What I have not done:

  • Switched to Classic Graphics Engine

Has anyone seen this, and is there a known fix that keeps the new graphics engine intact?