Dropdown value is not cleared when options change

[dmytro-gokun]

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Plunkr Case (Bug Reports)
https://stackblitz.com/edit/primeng-dropdown-options-changed-value-not-cleared

Current behavior
If a dropdown has a selected item and it's options change so that selected item is not longer present, the dropdown keeps previous value and "clear" button is not hidden:

Expected behavior
The dropdown value has to be cleared (with "change" event fired) and "clear" button hidden.

• Angular version: 9.1.1
• PrimeNG version: 9.0.6

[dheeraj237]

This should be handled in dropdown module itself when we change option list, selectedItem should re initialize or set to null so that ngModel changes to new value.
You can still this.selectedCity = null; in your onClick() event when setting new options list for workaround.

[dmytro-gokun]

The problem still exists in 9.1.0

[yigitfindikli]

Fixed in ed3b308