Describe the bug

Use a multiselect without filter and header, like this

<p-multiselect [filter]="false" [showClear]="true" [showHeader]="false"

The last navigated item is selected after hitting tab.

So tabbing to the next element has the same effect as hitting enter or space.

Pull Request Link

#19258

Reproducer

https://stackblitz.com/edit/6jz5m2az?file=src%2Fapp%2Fmulti-select-reactive-forms-demo.html

Environment

MacOS

Angular version

21

PrimeNG version

v21

Node version

24.12.0

Browser(s)

Chrome

Steps to reproduce the behavior

1. Open Multiselect via Keyboard enter
2. Select 1-2 items by navigating to them via arrow keys and hitting enter or space
3. navigate to an unselected item and hit tab

Expected behavior

item is not automatically selected after hitting tab