Ion-segment button bottom border ionic v4

In latest version, border bottom from ion-segment button removed from mobile view.

.segment-button-indicator {
	display: none;
}

in DOM shadow. and unable to override this. any solution?

What I did was creating a transparent color in the css and set the segment color property equal to transparent

.ion-color-transparent {
    --ion-color-base: transparent;
    --ion-color-base-rgb: 255, 255, 255;
    --ion-color-contrast: transparent;
    --ion-color-contrast-rgb: 255,255,255;
    --ion-color-shade: transparent;
    --ion-color-tint: transparent;
}
<ion-segment color="transparent">
</ion-segment>