Manual input value is light grey in editable dropdown

[Artynsen]

Problem:
Value is light grey when user uses manual input.
When user uses selection of dropdown options - value is dark grey.

How to reproduce:
Use [placeholder]="'some placeholder text'" and [editable]="true".
Input value manually.

Source of problem:
When editable dropdown has placeholder and user manully inputs value - class 'p-placeholder' and 'aria-label = 'some placeholder text'' don't dissapear on input element.