Doesn't mark the first item when the selected item is cleared by backspace

Describe the bug The scenario is when the [clearOnBackspace]="true" [markFirst]="true" attributes are enabled. So when I clear the value using backspace, it behaves as expected. Which is, it clears the input field and mark the first attribute in the dropdown. Now, I select a value from the dropdown below and focus out from the input field. Then I click on the input field and clear the selected item using backspace, it doesn’t mark the first one

Reproducible example Stackbiltz Example which reproduces described behavior

To Reproduce Steps to reproduce the behavior (if the example is not provided):

1. Go to the given example
2. Click on the select dropdown
3. Scroll down and select a value
4. Focus out from the select input field
5. Again focus on the select input field
6. clear the selected item using backspace
7. Can observe the issue the first item is not marked but the previously selected item

Expected behavior On the 7th step, mark the first item in the dropdown

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser - chrome, firefox, edge
• Version - 73.0.3683.86 (Official Build) (64-bit), 66.0.2 (64-bit), 44.17763.1.0 respectively

Smartphone (please complete the following information):

• Didn’t test

Additional context The expected behavior happens when the selected item is cleared using the clear/close icon though

[varnastadeus]

This should work:

const [first] = select.itemsList.filteredItems;
select.itemsList.markItem(first);
// to scroll
select.dropdownPanel.scrollTo(first);

[varnastadeus]

the intention of [markFirst] was to continue from last selection/first item when opening the dropdown. While dropdown is opened marked item stays in the same position. This is by design and otherwise, the user will get unexpected scrolls which will result in bad UX.