How to Fix Missing Parentheses in Word Equations Opened in Firefox
Question details
Parentheses are missing from equations when viewing or editing Word documents via OneDrive in the Firefox browser.
- Product
- Microsoft Word
- Device & OS
- not provided
- Scenario
- Opening, viewing, or editing documents containing mathematical equations in Word for the Web using Firefox.
- Observed behavior
- Equations display perfectly in the Word desktop application, but parentheses vanish in the Word for the Web interface on Firefox, even after clearing the browser cache and disabling all extensions.
Ensure your Firefox browser is updated to the latest version, and verify if the issue persists when creating a completely new, blank Word document.
Open the Document in the Word Desktop Application
Since the issue is specific to Word for the Web's rendering engine in Firefox, opening the file directly in the desktop app bypasses the browser bug entirely.
Word for the Web relies on browser-specific technologies to render complex elements like equations. When a browser like Firefox encounters compatibility issues with Microsoft's web rendering, the safest workaround is to utilize the native desktop application where full formatting is supported.
While viewing your document in Word for the Web via Firefox, look at the top ribbon menu.
Click the 'Editing' or 'Viewing' dropdown button on the ribbon, and select 'Open in Desktop App'. This will launch your local Microsoft Word application and load the document with all equation brackets fully intact.
Switch to a Different Supported Web Browser
If you do not have the Word desktop application installed, accessing your OneDrive account through a different browser can resolve the rendering error.
Report the Rendering Bug to Microsoft
If workplace IT policies restrict you to using only Firefox and prohibit switching browsers, you should escalate the rendering issue to Microsoft for a service-side patch.
Experience Flawless Equation Rendering with WPS Office
If Microsoft Word for the Web struggles to display your equations properly in your preferred browser, try WPS Office. It provides a highly compatible, lightweight desktop alternative that accurately renders Microsoft Word documents, complex mathematical equations, and advanced formatting for free.
Frequently Asked Questions
Why do equations look different in Word for the Web compared to the desktop app?
Word for the Web relies on HTML and browser-specific rendering engines to display documents. Complex elements like equations, advanced typography, or unsupported fonts may occasionally fail to render correctly depending on how a specific browser interprets the page code.
Are the parentheses permanently deleted from my document?
No, the parentheses are not deleted from your file. They are simply failing to display visually within the Firefox browser. Opening the exact same file in the Word desktop application or another browser will show your equations completely intact.
Can browser extensions cause equation display issues in Word online?
Yes, browser extensions like ad blockers or custom styling tools can sometimes interfere with how web page elements are displayed. However, if you have disabled all extensions and cleared your cache but the issue persists, it is likely a core compatibility bug between that browser version and Word for the Web.
