Macs are not rendering lines correctly when they have a width greater than 1. This appears to only be true when painted by a variable. Linux works correctly. Here is how to replicate. * MacOS, 5.11.0, builtin server. * Open dataset from https://discourse.paraview.org/t/cell-values-partly-disappear-when-editing-width-on-mac/11666. Apply. * Render by surface. Paint by pipe_id. * Advanced property tab/ change line width to 5. The vertical lines disappear. Attached screenshot has the data read in twice. The white data is correct, the data painted with cool to warm is incorrect, and is missing vertical lines. Note the incorrect dataset has been translated left and up so the correct and incorrect data aren't drawn on each other. @cory.quammen How critical do you think this is?