Accessibility Enhancements in Salesforce: Reflow and Resize Improvements for All Users

Overview

These enhancements are delivered as Release Updates — changes that Salesforce will enforce on a set schedule.
Admins are encouraged to test and enable each update in a sandbox environment ahead of the enforcement date to avoid any disruption in production.
The updates must be enabled in order — Update 1 is a prerequisite for Updates 2 and 3.

Update 1 — Page Headers and Modal Windows (200%+ Zoom)

Before this update: When users zoom their browser to 200% or more, page headers stay fixed and block content during scrolling. Inside modal windows, buttons and interactive elements are pushed outside the visible area — making them unreachable without horizontal scrolling.

After this update: Page headers scroll with the page rather than staying fixed and blocking content. Modal windows keep all buttons and interactive elements within the visible viewport, regardless of zoom level.
Enforcement: Summer '26

Update 2 — Date Pickers, Popovers, Bottom Utility Bars, and Record Headers (Up to 400% Zoom)

Before this update: At zoom levels above 200%, the following elements break in specific ways:

* Date Pickers — The calendar dropdown clips off-screen, making it impossible to select certain dates without zooming back out
* Popovers — Tooltips and informational pop-ups overflow the screen boundary and cannot be fully read
* Bottom Utility Bars — At high zoom, the bar expands in height and button labels get cut off, with no way to identify what each button does
* Record Headers — Fields in the record header get pushed out of view, requiring users to scroll horizontally to access key record information

After this update: Each element adapts gracefully at up to 400% magnification:

* Date Pickers — The calendar remains fully visible and all dates are selectable at 1280px viewport and 400% zoom
* Popovers — Tooltips and pop-up messages stay within the screen boundary and are fully readable
* Bottom Utility Bars — Button labels truncate to fit the bar height; the full label is always available via tooltip on hover or keyboard focus
* Record Headers — All key fields remain within the visible viewport — no horizontal scrolling needed. We recommend changing the record highlight panels on each object to the Dynamic Highlight Panel as this supports reflow to 400%.

Enforcement: Summer '26

Update 3 — Cards, Docked Containers, Menu Lists, and Panels (Up to 400% Zoom)

Before this update: Cards, docked containers, menu lists, and side panels — including the Guidance Center and Einstein Chat panel — overlap page content or extend beyond the visible screen area at high zoom levels, making it difficult or impossible to interact with underlying content.
After this update:

* Cards, docked containers, menu lists, and panels are fully usable at 1280px viewport and 400% magnification
* Header content within these elements wraps to the next line instead of being clipped
* Side panels no longer overlap page content or extend beyond the visible screen area

Enforcement: Winter '27

Note: Update 3 requires Update 1 to be enabled first.

Why Do These Enhancements Matter?

Many users — including those with low vision — rely on browser magnification to comfortably read and interact with content. At high zoom levels, Salesforce UI elements that are not optimised for reflow can break: content gets cut off, panels overlap, and interactive elements become unreachable.
These updates bring Salesforce in line with WCAG 2.2 Level AA standards, specifically:

* 1.4.4 Resize Text — Content remains fully functional when text is resized up to 200% without assistive technology
* 1.4.10 Reflow — Content reflows without requiring horizontal scrolling at 400% zoom on a standard 1280px viewport

By enabling these updates, your org ensures that all users — regardless of vision needs — can navigate and use Salesforce effectively.

Important: These Updates Are Separate from the ui:* Component Deprecation

A common question: Do I need to replace my deprecated ui:* components to comply with these updates?
No. These Release Updates and the ui:* component deprecation (announced in Winter 2020) are separate initiatives. Enabling these accessibility enhancements does not require you to replace or migrate any ui:* components.
However, if your org uses custom components built with deprecated ui:* elements, you may notice visual layout issues at high zoom levels after enabling these updates — such as elements overlapping or content being cut off. These issues are visual in nature and do not affect core functionality, but they can impact users who rely on browser magnification.
Recommendation: Test your custom components in a sandbox at 200% and 400% zoom before enabling in production. If you encounter layout issues, contact Salesforce Support for guidance.

UI Components Impacted by Each Release Update

Use this as a quick reference when triaging customer-reported issues or reviewing custom component behaviour after enabling these updates. To identify the component tag in question, inspect the element in the browser's developer tools (right-click → Inspect) and look for the custom element tag name.

Update 1 — Page Headers and Modal Windows

• one:header
• lightning/modal / lightning-modal

Update 2 — Date Pickers, Popovers, Bottom Utility Bars, Record Headers

• ui:datePicker / lightning-datepicker
• ui:panel
• one:utilityBarContent
• lst:listViewManagerHeader

Update 3 — Cards, Docked Containers, Menu Lists, and Panels

• lightning-card / force:card
• force:dockingPanel
• ui:menuList
• runtime_thp_learning-side-panel (Guidance Center, Einstein Chat, etc.)