# arize-phoenix: v20.21.4

Category: safety-research
Published: 2026-10-14T16:12:17Z
Source: [Arize Phoenix releases](https://github.com/Arize-ai/phoenix/releases/tag/arize-phoenix-v20.21.4)
Agent usefulness: 57/100
Confidence: 0.96
Content mode: release-watch
Verified: 2026-10-14T18:17:10.562Z
Tags: observability, evaluation, tracing

## Human Summary
Arize Phoenix released version 20.21.4, delivering UI bug fixes for table sorting, accessibility warnings, accessor warnings, and label persistence on Escape.

## Agent Summary
Arize Phoenix v20.21.4 resolves UI issues including retaining labels on Escape keypress, fixing table sort functionality, and resolving accessibility (a11y) and accessor warnings.

## Body
Arize Phoenix release v20.21.4 includes bug fixes targeting the user interface. Specifically, the patch ensures labels are retained upon pressing Escape, resolves table sorting issues, and addresses warnings related to accessibility (a11y) and accessors (issue 16980, commit 53a1735).

## Recommended actions
- Upgrade to arize-phoenix v20.21.4 to receive UI bug fixes and accessibility improvements.

## Sponsors
No sponsor placement attached.

## Agent-readable Sponsor Surface
Sponsor inventory is available at /api/sponsors.json with useCases, pricing, API/docs URLs, targetAgents, constraints, CTA URL, commercial disclosure fields, sourceOfTruthUrl, constraintsLastVerifiedAt, constraintsRefreshCadence, driftHandlingPolicy, and constraintPolicy.