unwindToViewController not working in iOS 15

[rued]

What did you do?

I have VC1 -> VC2 -> VC3
I use VC3.hero.unwindToViewController(VC1) to unwind.

What did you expect to happen?

With iOS 14 and earlier, this has been working fine, I see a smooth transition from VC3 -> VC1

What happened instead?

After upgrading to iOS 15, the unwind DO happen, but the animation is from VC3 -> VC3, and when done an instant switch to VC1.
debugger reports: 'Unbalanced calls to begin/end appearance transitions for VC3'

General Information

• Hero Version: 1.6.1

• iOS Version(s): iOS 15

• Swift Version: Swift 5.5

• Devices/Simulators: iPhone 12 Pro

• Reproducible in Examples? (Yes/No): No

Demo Project

None

[rued]

I might add that I'm not using Navigation controllers.

VC2 & VC3 are opened using:

let controller = XXXViewController() // isHeroEnabled = true is set in viewDidLoad
controller.modalPresentationStyle = .fullScreen
controller.delegate = self
controller.datasource = self
controller.heroModalAnimationType = .selectBy(presenting:.slide(direction: .left), dismissing:.slide(direction: .right))
self.present(controller, animated: true)

[varunpm1]

I have seen one more issue on iOS 15 with similar steps. I see a black screen when dismissing and I have attached example project as well - #721

[LeonBiters]

I also encountered the same problem. How did you solve it?