List-Formatting: View formatting - hideColumnHeader stopped working in web parts

Category

• Question
• [ x] Bug
• Enhancement

Expected or Desired Behavior

Setting “hideColumnHeader”: true in view formatting json should hide column headers both in list and list web parts

Observed Behavior

The “hideColumnHeader”: true worked as expected in list webparts a month ago, but now only works when you are in the list.

Steps to Reproduce

Create a simple list Format default view { "schema": "https://developer.microsoft.com/json-schemas/sp/view-formatting.schema.json", "hideSelection": true, "hideColumnHeader": true, "rowFormatter": { "elmType": "div", "txtContent": "[$Title]" } } Add webpart list webpart to modern page Column headers are now hidden in the list but visible in the list web part