You installed Flying Press to speed up your WordPress site. Pages load faster now. But your mobile menu stopped working. The hamburger icon does nothing, or the menu opens with a long delay. That is frustrating because speed should not break navigation.
A common issue is that site owners disable Flying Press completely. That is not necessary. The problem is usually one specific setting that changes how JavaScript loads on mobile devices.
Why Flying Press Affects Mobile Navigation More Than Desktop
Desktop navigation often works with simple CSS hover effects. Mobile menus depend on JavaScript toggles, touch events, and animation timing. When Flying Press delays or combines JavaScript files, the menu script may load too late or break completely.
This is not Flying Press being broken. This is the plugin doing exactly what you asked: optimizing scripts. The menu script just needs special handling.
The Settings Most Likely to Break Your Menu
- Delay JavaScript (especially if menu script is delayed)
- Remove unused JavaScript (may strip menu code)
- Combine JavaScript (can change script execution order)
- Lazy load JavaScript (waits until user interaction)
Delay JavaScript is the biggest offender. If the menu script loads after the user taps the icon, nothing happens.
Why It Happens Only on Some Themes
Different themes handle mobile menus differently. Some use simple CSS that works without JavaScript. Others depend on complex jQuery or React components. Flying Press cannot know which scripts are critical for your specific theme.
This is why one website runs Flying Press with no menu issues while another breaks immediately. The theme matters more than the plugin.
How to Fix the Menu Without Removing Flying Press
- Go to Flying Press settings → JavaScript
- Turn off “Delay JavaScript” and test the menu
- If that fixes it, add your menu script to the exclusion list
- If problem continues, turn off “Combine JavaScript” next
- Clear all cache after every change
- Test on a real phone, not just browser inspector
Most menu problems are solved by excluding one or two JavaScript files from delay or combination.
People Also Ask About Flying Press Menu Problems
Why does my menu work on desktop but not on mobile with Flying Press?
Because mobile menus depend more on JavaScript timing. Desktop navigation often uses CSS that is not affected by script delay.
Should I disable Flying Press completely?
No. Isolate the specific setting causing the issue. You can keep most speed gains.
Can another plugin make Flying Press worse for menus?
Yes. Running Autoptimize or WP Rocket alongside Flying Press can create conflicts. Use only one optimization plugin for JavaScript.
How to Find the Right Script to Exclude
Open your site on mobile. Right-click the menu button → Inspect. Look for JavaScript file names related to navigation. Common names include: navigation.js, mobile-menu.js, theme-scripts.js, or customizer.js.
Add these file names to Flying Press delay exclusion list. Test again. If the menu works, you found the right scripts.
Related Plugins That Handle Optimization Differently
If Flying Press continues to break your menu, consider WP Fastest Cache or W3 Total Cache. These offer similar speed gains with different JavaScript handling.
Perfmatters is another option with more granular script control. Some site owners prefer it for mobile menu stability.
Final Thoughts
If Flying Press breaks your mobile menu, do not uninstall the plugin. Turn off Delay JavaScript first. That solves most cases. If not, exclude your theme’s menu script from optimization.
You can keep 90% of the speed benefit while fixing the menu. The plugin is not the enemy. The setting just needs adjustment for your specific theme.