iOS issue with Sharing component

[stezelMIT]

Describe the bug

When I use the Sharing button and start the process and change my mind and not share and return to my app all the buttons at the lower half of the app disappears replaced by a black region. You need to kill the app and start over to get your buttons back. Try this sharing a few times, it may work first time but then leads to the error mentioned.

EmergencyApp_Final.aia.zip

ImageTextGallery.aia.zip

Affects

• Designer
• Blocks editor
• Projects Explorer
• Android Companion
• iOS Companion
• Android Compiled APK/AAB
• iOS Compiled IPA
• Buildserver
• Debugging
• Other... (please describe)

Expected behavior

The buttons should not disappear after a sharing or cancelled sharing.

Steps to reproduce

Share a few times and cancel share and see that the buttons are gone.
Again this may be dependent on my iPhone 16 iOS version 26.5.

[AbhishekIISERB]

Hi @stezelMIT!! I’d love to take a crack at fixing this issue.

I've been looking into the cause of this bug, and it appears to be triggered by two overlapping layout behaviors when dismissing the UIActivityViewController on iOS:

1. Unprotected Keyboard Dismissal in Form.swift: When the share sheet is cancelled, iOS broadcasts a keyboardWillHide notification. Currently, the observer in Form.swift blindly adds height to the view without checking if the keyboard was actually visible (_keyboardVisible). This inadvertently pushes the bottom buttons off the screen.
2. Presentation Context in Sharing.swift: Presenting the UIActivityViewController directly from _form triggers the iOS 13+ .pageSheet animation, which scales the Form's view backward. Because the form manages its constraints manually, this animation can corrupt the layout upon restoration.

Proposed Fix:

• Add a simple guard _keyboardVisible else { return } check to keyboardWillHide in Form.swift.
• Update Sharing.swift to present the UIActivityViewController from the keyWindow's rootViewController (similar to how BarcodeScanner.swift handles it), ensuring the scale animation applies to the navigation controller instead of directly to the Form.

I can put together a PR with these changes shortly. Let me know if this approach sounds good or if you have any feedback before I submit it!

[stezelMIT]

Thanks @AbhishekIISERB I don't know the codebase well to know if this is a good approach but our Dev team should be able to check your PR.