IssueTracker

Lines for reference in ModalBottomSheet.android.kt causing this behavior:

val newTarget = when (sheetState.anchoredDraggableState.targetValue) {
  Hidden -> Hidden
  PartiallyExpanded, Expanded -> {
    val hasPartiallyExpandedState = newAnchors
        .hasAnchorFor(PartiallyExpanded)
    val newTarget = if (hasPartiallyExpandedState) PartiallyExpanded
    else if (newAnchors.hasAnchorFor(Expanded)) Expanded else Hidden
    newTarget
  }
}

My proposed solution would be:

val targetValue = sheetState.anchoredDraggableState.targetValue
val newTarget = when (targetValue) {
  Hidden -> Hidden
  PartiallyExpanded, Expanded -> {
    when {
      newAnchors.hasAnchorFor(targetValue)) -> targetValue
      newAnchors.hasAnchorFor(PartiallyExpanded)) -> PartiallyExpanded
      newAnchors.hasAnchorFor(Expanded)) -> Expanded 
      else -> Hidden
    }
  }
}