After upgrading from OH 3.4 to 4.0.0M3 I have the behaviour that a page with a widget that is using JSON.parse from a field value in combination with a repeater control to create a list is only updated when opened the second time.
When first opened the widget title is shown but the list is empty. When navigating to another page and then clicking again on the page with the widget everything looks good.
Any ideas on the root cause or how to investigate further?