Plugin functionality breaks because it depends on old jQuery versions.
Plugin Requires Deprecated jQuery
Key Points: Plugin features (like sliders, dropdowns, or modals) stop working due to outdated jQuery syntax.
Your gallery doesn’t open, the dropdown is frozen, or sliders just sit there. Many older plugins haven’t updated to comply with the modern jQuery bundled in WordPress.
🧯 Common Symptoms
- Errors in browser console referencing
.live()or deprecated jQuery methods - UI elements not interactive
- Breakage after WordPress core or jQuery migration update
🛠️ What You Can Do
- Use the Enable jQuery Migrate Helper plugin as a temporary fix
- Contact the plugin author for updates
- Replace plugin with a modern alternative
⏳ Warning
jQuery Migrate is a band-aid — not a long-term solution. Outdated plugins need to be replaced or rewritten.