Rounded corners broken after 1.6.12

[jt-gilkeson]

Please complete the following information:

• Library Version 1.7.6

Describe the Bug:
We have rounded corners set on our popup which worked perfect in 1.6.12 but in latest releases the corners now appear squared.

Add a clear description about the problem.
We use an xml layout with the following helper to launch. This used to give rounded corners but now has square corners. Switching back to 1.6.12 shows the rounded corners.

fun Context.buildCustomBalloon(@LayoutRes layout: Int, owner: LifecycleOwner?): Balloon =
    Balloon.Builder(this)
        .setLayout(layout)
        .setBackgroundColorResource(R.color.colors_background_default_primary)
        .setCornerRadiusResource(R.dimen.radius_l)
        .setArrowPositionRules(ArrowPositionRules.ALIGN_ANCHOR)
        .setArrowSizeResource(R.dimen.DP_28)
        .setArrowTopPaddingResource(R.dimen.spacing_s) // makes the arrow wider than it is tall
        .setBalloonAnimation(BalloonAnimation.ELASTIC)
        .setIsVisibleOverlay(true) // sets the visibility of the overlay (scrim) for highlighting an anchor.
        .setOverlayColorResource(R.color.colors_overlay_default_primary)
        .setOverlayShape(BalloonOverlayRoundRect(R.dimen.radius_m, R.dimen.radius_m))
        .setOverlayPaddingResource(R.dimen.spacing_3_xs)
        .setDismissWhenTouchOutside(false)
        .setDismissWhenOverlayClicked(false)
        .setLifecycleOwner(owner)
        .build()

Expected Behavior:
The corners of the popup should continue to show with rounded corners

[jt-gilkeson]

It looks like setting setIsClipArrowEnabled(true) "fixes" this, but was a breaking change made on purpose (in a minor release update from 1.6.12 to 1.6.13)?
(saw this in #856)

Why is setIsClipArrowEnabled false by default if it breaks existing behavior?