When a Hybrid App Button Does Nothing

Short summary

A Blazor Hybrid file-picker button appeared dead on iOS because the hidden native input was too far removed from the user's tap, breaking trusted user activation. The fix involved making the transparent input span the visible button, adding explicit mobile dialog sizing, and declaring native capability metadata in the iOS manifest. The broader lesson is that hybrid app interactions are cross-layer contracts where browser, native platform, and app configuration must all agree.

• •Hidden file inputs in iOS WebView can break trusted user activation
• •Fix required aligning transparent input, dialog sizing, and iOS manifest metadata
• •Hybrid app interactions are cross-layer contracts, not single component events

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