New in Sketch 2026.3

Stacks

The following properties have been added to Stacks to support new layout features in 2026.3:

• StackLayout.bordersAffectLayout toggles whether the largest protruding border on each item should be accounted for during layout calculations:

  frame.stackLayout.bordersAffectLayout = true
  

• StackLayout.gap can now be negative to enable overlapping:

  frame.stackLayout.gap = -10
  

• StackLayout.stackingOrder controls how overlapped items are displayed on the canvas:

  frame.stackLayout.stackingOrder = StackLayout.StackingOrder.FirstOnTop // .LastOnTop
  

• Individual Stack items now have optional minSize, maxSize, and percentageSize (for items with relative sizing) properties:

  frame.stackLayout = { ... }
  
  frame.layers[0].minSize = { width: 10, height: 15 }
  frame.layers[0].maxSize = { width: 88, height: 55 }
  
  frame.layers[1].update({
    horizontalSizing: sketch.FlexSizing.Relative
    verticalSizing: sketch.FlexSizing.Relative
  })
  frame.layers[1].percentageSize = { width: 0.5, height: 0.8 }
  

find()

• Fixed the “less than or equal” predicate to work correctly on frame:

  const layers = sketch.find(`[frame.height<=300]`)