Problem: Menu Items Shift When Navigating Between Pages in Oracle APEX

Published on 28 Dec 2025 by CHATURVEDINIDHI26@GMAIL.COM

APEX Menu Shift Issue

Problem: Menu Items Shift When Navigating Between Pages in Oracle APEX

Scenario

Aapne Oracle APEX me ek navigation bar (header menu) design kiya hai. Desktop view me menu items normally hover aur click par submenu dikhate hain. Lekin ek common issue ye hota hai:

Issue: Jab aap ek page se doosre page par navigate karte hain, menu items thoda “hilte” ya jagah badalte lagte hain, aur sometimes vertical scrollbar appear/disappear hota hai.

Ye behavior confusing aur unprofessional lagta hai, aur user experience ko negatively affect karta hai.

Root Cause

Hover-only CSS menus: APEX me .t-NavigationBar-item:hover > ul CSS use kiya gaya hai. Jab page change hota hai, hover state reset ho jati hai. Isse submenu disappear hota hai.
Vertical scrollbar appear/disappear:
- Agar page content short hai → browser vertical scrollbar show nahi karta.
- Agar page content zyada hai → vertical scrollbar appear hota hai.
Browser ke viewport width me ye subtle change menu layout me shift create karta hai. Is shift ki wajah se lagta hai ki menu items “hil rahe” hain.
Dynamic page rendering: APEX me pages aur regions often dynamically reload hote hain. Agar menu region refresh ho jaye, hover state reset ho sakta hai.

Solution

1️⃣ Force vertical scrollbar to always appear

CSS property overflow-y: scroll; use karke hum ensure kar sakte hain ki vertical scrollbar hamesha visible ho, chahe page content chhota ho ya bada.

html {  
   overflow-y: scroll; /\* always show vertical scrollbar \*/  
}

Benefits:

Browser width fixed rahegi.
Menu items shift nahi honge.
Smooth and consistent user experience.

2️⃣ Keep menu active on current page

APEX automatically adds is-active class to the current page’s navigation item. CSS me ye rule add karen:

/\* Show submenu for active page \*/  
.t-NavigationBar-item.is-active > ul {  
   display: block;  
}

Benefits:

Current page ka menu open rahega.
Hover ke bina bhi menu visible rahega.

3️⃣ Optional: Combine hover + active

Desktop experience aur better UX ke liye:

.t-NavigationBar-item:hover > ul,  
.t-NavigationBar-item.is-active > ul {  
   display: block;  
}

Ab:

Hover karne par submenu dikhega.
Current page par submenu automatically visible rahega.

Final Notes

Ye solution desktop-specific hai. Mobile ke liye click-based toggle JS add karna padega.
Browser inconsistencies (Chrome, Edge, Firefox) me scrollbar behavior thoda alag ho sakta hai, lekin overflow-y: scroll; standard fix hai.
Always test across pages in your APEX application to ensure layout stability.

✅ Summary

Problem ka reason: vertical scrollbar appear/disappear → viewport width change → menu shift
Solution: force scrollbar always visible + use .is-active CSS for current menu
Result: Menu items ab stable aur consistent rahega, page navigation ke dauran.