How can i execlude subview from parent clip in UIKit?

Question

In my iOS App, i am using CalendarKit, a Framework to create a full-featured Calendar. I want to modify the EventView to add rounded corners. To do that, i configure the EventView Class like this:

private func configure() {
    clipsToBounds = true
    color = tintColor
    addSubview(textView)
    
    for (idx, handle) in eventResizeHandles.enumerated() {
      handle.tag = idx
      addSubview(handle)
    }
  }

and i set the following properties to the view:

layer.cornerRadius = 6

it works but now, the rounded dots for editing/moving are clipped:

What can i do, to unclip the dots from parent view? Any ideas? I already tried to set zPosition but it doesn't work.

Note: The full EventView Class can be found here: https://github.com/richardtop/CalendarKit/blob/0235dab6e9ca190a380868224d0e8fb149e6009a/Source/Timeline/EventView.swift