If you add multiline Chip dynamically to ChipGroup until it expand to multiple rows, there is zero margin vertical margin.
Set app:chipSpacingVertical on ChipGroup to enable margin spacing.
<com.google.android.material.chip.ChipGroup
android:id="@+id/mainTagChipGroup"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:chipSpacingVertical="4dp"
/>NOTE: You can set app:chipSpacingHorizontal or app:chipSpacing as well.
NOTE: Strangely, default margin for static Chip defined in xml vs dynamic Chip added programatically is different. I am using com.google.android.material:material:1.1.0-alpha04.
NOTE: Setting layoutParams on Chip doesn't work.