A mega menu is essentially a large, positioned dropdown built from your regular menu structure, and because that positioning depends on the specific menu plugin or theme feature calculating column widths and stacking order correctly, a mega menu is more prone than a simple dropdown to breaking when something else on the page — a sticky header, a z-index conflict, a recent menu edit — shifts the assumptions it was built around. Because a mega menu typically sits near the very top of every page, a problem there is also one of the most visible things a mistake elsewhere on the site can produce, even when the mega menu’s own configuration was never actually touched.
Before you buy, one quick look
Read-only. Open the mega menu on desktop and check whether the misalignment or overlap happens consistently, or only after scrolling, resizing, or interacting with another page element first.
A problem that only appears after a specific interaction, like scrolling past a certain point, points toward a z-index or sticky-positioning conflict rather than the mega menu’s own configuration being simply wrong — useful to know before ordering.
It’s also worth checking whether the issue shows the same way for logged-out visitors as it does for you while logged into the admin, since certain caching setups treat those two cases differently.
Mega menu configuration & conflict
Your mega menu is misconfigured or conflicting with another element — misaligned columns, submenus not opening, or overlap with other page content.
- Full backup taken before we start
- If we can’t fix it, you get your money back
- We never ask for your own password
This or something else?
| Mega menu columns misalign, overlap other content, or submenus fail to open | This fix covers it |
| The mobile menu specifically is missing or broken, not the desktop mega menu | Menu not displaying or breaking on mobile |
| A sticky header specifically is the element in conflict | Sticky header & scroll behaviour repair, a related but distinct fix |
| The menu displays fine but breadcrumbs below it show errors | Breadcrumb display errors, a different fix |
| The problem is a regular dropdown menu, not a mega menu specifically | A different, narrower menu diagnosis |
What you are seeing
- Mega menu columns appearing misaligned or in the wrong order
- Submenu panels overlapping other page content or failing to open reliably
- The issue appearing only after scrolling, resizing, or a specific interaction
- Inconsistent behaviour across different browsers or screen sizes
- The problem starting after a menu edit, theme update, or plugin change
Common causes
- A z-index conflict between the mega menu and another positioned element
- A sticky header’s positioning interfering with the mega menu’s own calculations
- Menu structure edits, such as added items, exceeding what the column layout expects
- A theme update changing how mega menu positioning is calculated
- A caching plugin serving mega menu markup from before a configuration change
What we do
- Reproduce the misalignment or conflict and identify the specific trigger
- Check for z-index or positioning conflicts with other page elements
- Review the menu structure for edits that exceed the mega menu’s expected layout
- Correct the underlying configuration or positioning conflict
- Clear relevant caches and confirm consistent display
- Test across browsers, screen sizes, and the specific interaction that triggered it
What is included
- The mega menu misalignment or conflict identified and corrected
- Testing across browsers and screen sizes to confirm consistent display
- A check for the specific interaction or trigger that caused the issue
- The pre-fix backup, kept for 30 days
Not included
- Redesigning the mega menu’s layout or column structure beyond restoring correct display
- Fixing a broken mobile menu, which is a separate fix
- Building a new mega menu feature your theme doesn’t natively support
- Ongoing testing as you continue editing the menu structure in future
Questions about this fix
Will adding new menu items in future risk breaking this again?
A large enough structural change can, particularly if it exceeds what the column layout was designed for, though we'll leave you with a sense of the practical limits.
Could my sticky header really be the cause of a menu problem?
Yes, a sticky header's positioning and z-index can interfere with a mega menu's own calculations in ways that aren't obvious from looking at either element alone.
Is a mega menu inherently less reliable than a simple dropdown?
It's more complex, which does mean more potential points of conflict, but a properly configured mega menu is just as stable as any other menu once genuinely fixed.
Will this fix work the same across all browsers?
We test across the browsers that matter for your visitors specifically, since mega menu positioning calculations can behave slightly differently between browser engines.
Does this affect my mobile menu too?
Not directly — mobile menus typically use an entirely different display pattern than a desktop mega menu, so a separate fix applies if that's also affected.
Related fixes
If this is the second time this year
A bad update breaking the site is a symptom of updates not being tested first. Care plans run every update on a staging clone before it reaches your live site, which is the actual fix for this happening again.
Your access, your rules
Create a separate admin account for us and delete it when we are done. For anything else, we get in touch and agree a method — never a form field on this site, never by reply to an email.
We back up first, always
Before anything is touched we take a full backup and keep it for 30 days. If a fix goes wrong, we put the site back exactly as it was.
If it is not what you bought
If the problem turns out smaller than what you ordered, we refund the difference. If it is bigger, we stop and send a quote before doing any extra work.
If we cannot fix it
You get back what we received. Diagnosis is on us — you only pay when the problem is actually solved. The payment processor takes its fee before the money reaches us, so we never hold it and it is not ours to return. That is true here as everywhere else.
If it comes back
Reply within seven days of delivery and we put it back on the bench at no cost. The fix is not finished until it holds.
What we are responsible for
If something goes wrong with a fix, our responsibility is limited to what you paid for it. We take a full backup first so mistakes can be undone, and we tell you before doing anything outside what you bought.