ListItemPicker : when props are updated the selected items are always reset event if it should not

Category

[ ] Enhancement

[X] Bug

[ ] Question

Version

3.21.0

Expected / Desired Behavior / Question

When props are updated, this.state.selectedItems is erased evetn if it shoud not.

Observed Behavior

If a property the disabled is updated from true to false, all items are shown in the suggested list even the those from defaultSelectedItems.

Steps to Reproduce

Create the picker with default values and with the disabled property set to true. The update the property disabled to false.

Submission Guidelines

In the file ListItemPicker.tsx in the function UNSAFE_componentWillReceiveProps replace the first line
let newSelectedItems: any[] | undefined; by let newSelectedItems = this.state.selectedItems;

Start in ListItemPicker.tsx at UNSAFE_componentWillReceiveProps and inspect how selectedItems is handled when the disabled prop changes. Update the initialization as described in the issue, then verify that items from defaultSelectedItems remain selected and are not shown in the suggested list after disabled changes from true to false.