topic Re: Sketch - Valid Loops - Highlight - 2026, 2025 in Inventor Forum

Sketch - Valid Loops - Highlight - 2026, 2025

MattH_Work — Thu, 13 Nov 2025 16:12:04 GMT

In previous versions, sketches containing multiple closed loops were visually easier to interpret. Features such as Extrude or Revolve would highlight each loop in a distinct colour. Under the Millennium colour scheme, for example, constrained geometry appeared in black, unconstrained geometry in bright green, and fully closed profiles in a khaki-green tone.

Recently, this behaviour no longer seems to function correctly. Although a loop will highlight when hovered over, the underlying sketch geometry remains unchanged in colour. As a result, users must manually hover over each potential loop to determine which profiles are valid.

Re: Sketch - Valid Loops - Highlight - 2026, 2025

MattH_Work — Thu, 13 Nov 2025 16:29:55 GMT

Under Application Options > Display, the setting ‘Enable Smooth Sketch Lines’ affects loop highlighting behaviour.

When enabled: loop highlighting becomes extremely faint — almost imperceptible.
When disabled: loop highlighting appears clearly in green, as expected.

This naturally raises the question for Autodesk: could the loop highlight be made more visible when Smooth Sketch Lines is switched on?

Re: Sketch - Valid Loops - Highlight - 2026, 2025

johnsonshiue — Thu, 13 Nov 2025 22:14:13 GMT

Hi Matt,

I will need to work with the project team to understand the request better. Regardless, it will be an enhancement request.

Many thanks!

Re: Sketch - Valid Loops - Highlight - 2026, 2025

johnsonshiue — Fri, 14 Nov 2025 16:01:37 GMT

Hi Matt,

The project team has confirmed that this is a known issue, INVGEN-83337. It has not been resolved yet. In the meantime, you may want to disable the following option.

Tools -> App Options -> Display -> uncheck "Enable Smooth Sketch Display"

Many thanks!