MultiColumnComboBox does not display all items after selection

[kendo-bot]

Bug report

MultiColumnComboBox does not display all items after selection and when expanding through clickin on the dropdown icon.

Reproduction of the problem

1. Open the Demos - https://demos.telerik.com/kendo-ui/multicolumncombobox/serverfiltering
2. Type che into the input box
3. Select 'Chef Anton's Gumbo Mix' from the list
4. Now hit the dropdown button

Current behavior

• There are only 4 items in the popup and no scroller
• The selected item is not in view or highlighted
• Misaligned column headers

Expected/desired behavior

The selected item must be present and marked as currnet selection. There should be a scroller to load all items. The column headers should be aligned.

The issue is a regression starting with 2023 R1 SP1 2023.1.314 version

Environment

• Kendo UI version: 2023.2.606
• Browser: [all]