Grayed out button bug on Android devices

I’m seeing an intermittent behavior in which an ion-button in the header stays grayed out after being pushed. The state looks disabled but the button is actionable - seems like maybe the CSS is not being applied correctly.

Here is the simple code - no local or global CSS or other code modifying ion-button :

<ion-header>
  <ion-toolbar>
    <ion-title>
      TITLE
    </ion-title>
    <ion-buttons slot="end">
      <ion-button (click)="create()">
        NEW THING
      </ion-button>
    </ion-buttons>
  </ion-toolbar>
</ion-header>

Project details:

"@ionic/angular": "6.0.10",
"@angular/core": "13.2.5",
"@capacitor/cli": "3.4.3"