In the Create toolbar, hold Shift and click on the bottom right Primitive to add a plane.
Press F3 to open the Brush Tools window and navigate to the Particle Tools tab.
Scroll down to find the Particle Paint tool.
With the Particle Paint tool selected, drag the tool over the mesh. This should normally generate visible particles on the mesh, but in this case nothing seems to happen.
Expected behaviour Visual particles should appear on the mesh. The stats window should also update to show the number of vertices added to the scene.
Actual behaviour Nothing has happened, either visually or in the stats window.
Workaround Unknown.
Reproduced by Support in:
Modo 17.0v5 - Windows 11 / MacOS 12 Monterey Modo 17.0v1 - Windows 11 / MacOS 12 Monterey - REGRESSION
Unable to reproduce bug in: Modo 16.1v8 - Windows 11 / MacOS 12 Monterey
Earliest version tested Modo 16.1v8 - This issue doesn't appear in this version and has regressed