I have an iOS app that generates and renders a custom HTML document inside a UIWebView.
After updating a device to iOS 26, the same HTML is rendered with noticeably smaller fonts compared to previous iOS versions.
No code or HTML changes were made.
Context
HTML is generated dynamically and rendered in a UIWebView
The HTML is embedded inside a custom XML wrapper
The issue happens only on iOS 26
Earlier iOS versions render the font size correctly
Selecting any option will automatically load the page