What could be causing the animation issue with the images in Webflow on mobile (portrait) devices?

Image animation issues on mobile (portrait) devices in Webflow can be due to a combination of layout constraints, interaction settings, or performance optimizations. Here's how to troubleshoot and fix them.

1. Check Viewport-Specific Display Settings

• Ensure animations are not hidden on mobile portrait breakpoints.
• Go to the mobile portrait view in Webflow Designer and verify that:
• The elements involved in the animation are visible (not display: none).
• Their opacity or scale is not set to 0 until a trigger occurs.

2. Check Interaction/Animation Triggers

• Go to Interactions panel and check:
• The animation is not limited to desktop or tablet only. Interactions apply across breakpoints by default, but changes might be made on a specific viewport.
• Any scroll into view or on load interactions are actually firing on mobile.
• Ensure you're not targeting mouse hover or mouse move triggers, which don’t work on mobile devices.

3. Review Overflow and Visibility Settings

• If the image or its parent is set to overflow: hidden, it may prevent animations from appearing.
• On small screens, overflowing elements might get clipped or reflowed differently, affecting animation timing or visibility.

4. Test for Performance Delays

• Mobile browsers can throttle or skip animations to improve performance.
• Avoid heavy animations (like moving large images, large-scale transforms, or frequent opacity changes).
• Try simplifying animation steps, or reducing animation duration on mobile.

5. Verify IX2 (Interactions 2.0) Support

• All modern mobile browsers support Webflow’s IX2 engine, but if you're using custom code that overrides default Webflow behavior, it may interfere with interactions.
• Disable any custom JS temporarily to isolate the cause.

6. Ensure Elements Exist in the DOM

• If you're animating elements that are conditionally loaded, displayed after an interaction, or generated via third-party integrations, make sure they’re in the DOM at page load or interaction start.

7. Test on Real Devices and Browser DevTools

• Use Webflow Preview + DevTools (mobile emulation), but always confirm on actual devices.
• Use Chrome DevTools mobile preview with Show Rendering > Emulate CSS media to test animations accurately.

Summary

Animation issues on mobile portrait in Webflow are often caused by viewport-specific display settings, non-compatible triggers, or performance optimizations. Double-check styling, interactions, and trigger conditions on mobile breakpoints, and test on actual devices for accurate behavior.