Changelog

All notable changes to the Nexus platform are documented on this page.

Changes are grouped by week and categorized by type.

Dec 1-5, 2025

Cross-tab session synchronization - Chat widget sessions now synchronize across multiple browser tabs/windows. Messages and session state are shared in real-time using the Broadcast Channel API.
Disclaimer display modes - Three display modes for disclaimers: modal (blocking gate), footer (collapsible), and event (inline in message stream). Event mode supports optional input blocking until accepted. Learn more

Chat widget CSS isolation - Enhanced CSS isolation for the chat widget to prevent style conflicts with host pages.
Clear conversation menu customization - Added configuration options for the chat widget to customize the clear conversation menu item.

Enhanced session metadata viewing - Session metadata now displays with syntax highlighting for better readability and debugging
Dark mode for documentation - Documentation site now supports dark mode with automatic theme detection and manual toggle
Widget font size customization - Comprehensive font size configuration system for all text elements in the chat widget. Learn more
Persistent welcome messages - Option to keep the welcome message visible throughout the entire chat session. Learn more
Link styling control - Configure font weight for links in assistant messages. Learn more
Widget event styling - Configure styling for system events with default and per-type overrides. Learn more
Send button customization - Font size and weight configuration for the send button. Learn more
Avatar styling control - Comprehensive avatar customization including size, shape, and border styling. Learn more
Input autofocus control - Configure whether the input field autofocuses on load and after responses. Learn more
Autoscroll configuration - Control automatic scrolling behavior in the chat widget. Learn more
Scrollbar reliability - Implemented JavaScript-based scrollbar to prevent interference from customer CSS. Learn more

Widget state management - Replaced global signals with component state in ChatMenu to prevent state conflicts across multiple widget instances
Welcome message behavior - Corrected welcome message display when custom session IDs are specified
Persistent welcome messages - Fixed duplicate welcome messages appearing with persistent configuration
TextArea height calculation - Fixed maxRows height calculation to properly include border width
Placeholder styling - Improved placeholder text resistance to hostile CSS environments

Avatar configuration structure - Migrated to nested object structure for more intuitive avatar customization

Enhanced widget customization - New styling options including input borders, message bubble padding, scrollbars, links, and chat input height. Learn more
Welcome message display - Configure how welcome messages appear in the chat widget. Learn more
Session management - Initialize chat sessions with custom session IDs. Learn more
Agent escalation detection - Automatically detect when conversations should be escalated to human agents with customizable actions
Advanced content filtering - Improved tag-based filtering with support for complex queries
Metadata extraction - Automatically extract and apply tags from your content during ingestion
Tag-based content organization - Add and filter knowledge base entries using tags for better content management
Query authentication - Optional authentication support for query endpoints to secure your AI interactions
Metadata propagation - Preserve and display source metadata in search results and citations

Widget styling reliability - Improved resistance to conflicting styles from host pages
Widget text display - Improved text wrapping and message bubble width consistency. Learn more
Link wrapping - Links in assistant messages now wrap properly instead of overflowing the container