Preview looks wrong

You see

You open Preview and it shows:

• The wrong order of operations.
• Missing layers / objects.
• Extra geometry not on your canvas.
• An unexpected path direction.

What is happening

Preview is the result of running the planner. If preview looks wrong, the planner has produced something different from what you intended.

Fix

If a layer is missing from preview

• Verify the layer's Out (output) toggle is on in the Cuts/Layers panel. Layers with Output off do not appear in preview.
• Verify the layer's mode is set (Line / Fill / Image, not blank).
• Verify the layer has objects assigned.

If preview shows extra geometry

• Tool layers normally do not output. If they appear in preview, check Settings → File & Import → Include tool layers in job bounds and the layer's Output setting.
• Virtual arrays sometimes expand more than expected if count was set wrong.

If the order is wrong

• Reorder layers in the Cuts/Layers panel (drag rows or use the reorder arrows).
• The order in the panel = the order in the preview.
• Check the Optimization Settings modal (Laser Control → Optimization...): the Order by option might be set in a way that reorders layers.

If preview is stale (does not match recent edits)

• The panel header may show Stale, refresh required. Click Refresh.

If preview shows fast preview, then a different real preview

The planner runs in stages: a quick approximation first, then the full plan. The first preview may differ. Wait for the Generating preview... state to clear before judging.

Verify it worked

• Preview matches what you expected.
• The actual job confirms, what preview showed is what the machine did.

Still stuck?

• Preview dialog reference.
• Cuts / Layers panel.
• Laser Control: Optimization settings.
• Post in the Facebook group with a project file demonstrating the issue.