Microsoft Copilot Studio UX - Build 26.05.31-03

This article describes the fixes and improvements to existing functionality that are included in this build.

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Version 26.05.31-03 updates

"Try the new experience" banner now appears on Agents and Workflows list pages, with session-wide dismissal across these pages.
Agent-viewer role can access the Evaluation hub in the management experience.
One-click conversational agent creation loads within the app shell, keeping header and left navigation visible and avoiding unexpected redirects.
Creating test account connections now uses a standard popup-based OAuth sign-in flow across all connectors, allowing account selection during consent.
In the Computer Use Agent testing experience, the Test button is disabled when no instructions are provided to prevent empty tests.

Updated translations improve localized text throughout Microsoft Copilot Studio across multiple languages.
Accessibility and usability updates: the "Remove connection" action is keyboard-accessible; editing Microsoft 365 channel details keeps header and footer visible while scrolling; the View transcript button styling in Analytics is more consistent.
Analytics enhancements: clearer status when enhanced task completion prevents topic evaluation; custom metrics use an updated layout with improved 1–3 behavior; knowledge sources are ordered by total questions; charts correctly show x-axis labels for the last 360 days; quality reason label now shows "Not fully grounded."
Evaluation experience and management polish: "Configure classification" is now "Configure custom test method"; improved tab list and grid header styling; expanded overlay and grid spacing updates; Results and Configuration tabs auto-hide when no runs exist; renaming an evaluation correctly updates the name.
Authoring and setup reliability: input bindings for custom prompts are less likely to disappear; Start trial no longer crashes without email consent data and shows an expiry page for expired trials.
Breaking changes: Custom pronunciation authoring enforces stricter validation and blocks saving more than 500 lexicon items; lexicon-related options display more consistently with clearer in-product guidance.