ActionBar removedTitleBar 's primary action becomes an icon buttonOn the mobile view of embedded apps, the bottom "icon + text" bar (ActionBar) is going away. The primary action moves to an icon button at the top-right of the header, and secondary actions move into the overflow menu. If no icon is specified, + is shown by default.
TitleBar defined in primary action changes where it appears.The primary action was shown in the bottom bar with "icon + text". Secondary actions also appeared on screen.
The primary action becomesan icon-only buttonat the top-right of the header. Secondary actions are tucked into the overflow menu for a more consistent UI.
TitleBar . The API itself for defining primary / secondary actions on continues to be used. The article does not mentionNot specified.Instead of the previous "icon + text bottom bar," it now appears within the mobile header asan icon-only button.
secondary actions are ⋯ consolidated into the overflow menu, improving consistency of the mobile UI.
+ is the defaultIf you do not pass an icon property to primary action, the + (plus) iconis used automatically.
| Item | Details |
|---|---|
| Affected apps | TitleBar defines primary action or secondary actions onAll embedded apps that |
| Effective date | April 15, 2026 Applied to all target apps at once |
| Whether action is required | If the default + icon is fine,no action is requiredIf you want to show an appropriate icon, icon you must specify it explicitly |
| Target platform | Mobile (the focus of the article). Impact on desktop isnot specified |
Audit whether your app defines primary/secondary actions on TitleBar .
+ is sufficientIf the default plus icon fits the context, no further action is needed.
icon explicitlyIf you want to show an icon that fits the context, set icon property on the primary action.
icon to the primary action"— that's the only point. This ensures the most contextually appropriate icon is displayed on mobile.The bottom "icon + text" bar UI is being removed on mobile. Revisit any layouts that assume a bottom bar.
+ fallbackEven for actions where a plus is inappropriate, such as "Save" or "Publish", a plus icon will appear if no icon is specified. Beware the risk of unintended icons being misread.
Secondary actions are placed inside ⋯ . Since this adds one extra tap, reconsider the user flow if you've been placing frequently-used actions as secondary.
Rolls out to everyone on April 15, 2026 with no opt-in. The release cannot be stopped, so finish reviewing your icon specifications before the rollout date.
On mobile, buttons becomeicon-only, and the previously visible text will no longer be shown. Verify on a real device whether the action's meaning is conveyed by the icon alone (including from accessibility and mis-tap perspectives). Since the article includesno specificssuch as API names or code examples, check the latest App Bridge / TitleBar documentation for implementation details.
TitleBar , but icon is not explicitly specified in some places, so on and after 4/15 an unintended + may appear on mobile.TitleBar definitions and explicitly specify a contextually appropriate icon on the primary action. For screens that rely heavily on secondary actions, also verify the flow after they move to overflow.icon to be specified across all projects.+ Treat the fallback as a sign of a design oversight, and adding it as a review checklist item makes detection easier.TitleBar becomesan icon button in the header, and secondary actions move to the overflow.+ will appear, so before the effective date, take the small step of 'explicitly specifying an appropriate icon for the primary action.'"