SelectOnTab not working after upgrading to Angular 7.2.15

[pvw-4bs]

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name: Bug report
about: SelectOnTab not working anymore after update to latest angular 7(7.2.15)

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Describe the bug
When selectOnTab=true and you tab to select an item, the item is selected an the dropdown is closed. But when you then tab to go to tge next control, the first item in the list is selected and you can't tab to the next control.

Reproducbile example
https://stackblitz.com/edit/angular-uecse4

To Reproduce

1. Select the drodown
2. Type 4 to select "desc4"
3. Tab to select "desc4" and close the dropdown
4. Tab again to move to the next control

Expected behavior
"desc4" stays selected when tabbing to the next control

Screenshots

Desktop (please complete the following information):

• OS: Windows 10
• Browser Chrome
• Version Versie 75.0.3770.80 (Officiële build) (64-bits)

Additional context
When selectOnTab = false the behaviour is as expected
The stackblitz example in Angular 8 and i'm using 7.2.15, but the behaviour is the same
Thanks in advance for this very usefull component and hope you can provide a solution