Bug Fixes​

• Moves the realm resolution logic out of the global namespace for use with the Snippet 2.1.

Bug fixes​

• Fixed an issue where elements could be captured with the wrong tag name on pages that override or spoof element names (a technique some ad blockers use). This could cause affected parts of the page to replay incorrectly, including custom elements that use shadow DOM.

Bug fixes​

• Fixed an issue where mutations to adoptedStyleSheets were not captured when the array had a different prototype than expected.

Improvements​

• Canvas image capture processing now runs off the main thread, reducing the chance that capture impacts page performance.

Bug fixes​

• Fixed an issue where capture settings could be evaluated before they were fully resolved, which could affect whether content inside iframes was recorded.

Improvements​

• Added a feature flag to turn off canvas upload compression in rare cases of performance issues.

New features​

• Fullstory now recognizes interactions driven by AI agents through WebMCP, including flagging form submissions that were invoked by an agent rather than a person.

Improvements​

• Canvas image captures are now encoded as WebP instead of PNG, reducing the size of captured image data.

Bug fixes​

• Fixed an issue where FS('getCurrentSessionURL') could return a session URL with an incorrect organization ID.

Improvements​

• Guides & Surveys integrations now load (if enabled), including in child frames and on pages where session capture doesn't start.

Bug fixes​

• Fixed an issue where session restarts didn't re-trigger initial page-load signals (like page size reporting), which could result in incomplete data for restarted sessions.

New features​

• Under the hood changes to get ready for Snippet 2.1 release.

Improvements​

• Some optimizations for build size.

Bug fixes​

• Small code fixes related to Typescript update.

Improvements​

• Updated internal type definitions to ensure compatibility with newer versions of TypeScript.
• Optimized internal data structures (enumerations) for more efficient recording processes.

Improvements​

• Reduced bundle size by approximately 2% (gzip) by ensuring debug-only log messages are fully excluded from production builds.
• Minor performance improvement in DOM capture by reducing unnecessary function call overhead in the node encoding hot path.

Improvements​

• Return a user snapshot from FS('getConfig').
• Expose user properties set from fs.js via config details.

Bug fixes​

• Replace circular reference in vars with a path marker instead of dropping the value.
• Add a fallback to write snippet globals back to window when they're missing.

New features​

• Native HTML Popover Support: Added capture capabilities for the native HTML popover API to accurately record capture-phase toggle events and popover states for high-fidelity session replay.

Improvements​

• Enhanced Custom Namespace Resolution: Hardened how custom Fullstory namespaces are resolved across your site by reading the data-fs-namespace attribute for asynchronous integration scripts and data layers.
• More Predictable In-Session Configuration: Streamlined how in-session settings are initialized, prioritizing FS('getConfig') over raw window globals for a more robust recording configuration.

Improvements​

• Improved compatibility for Canvas screenshot mode.
• Added client-side guardrails and remediations to ensure Session UID stability and reliability.

Bug fixes​

• Minor internal maintenance and cleanup of unused script sidecar files.

Improvements​

• Added client-side guardrails that improve the stability and reliability of the Session UID feature.

Improvements​

• Improved observer configuration handling so that misconfigurations are gracefully rejected instead of throwing hard exceptions.

Bug fixes​

• Removed a duplicate license comment that appeared in the bundled fs.js output.

Improvements​

• Added internal support for a "force local resources" flag to improve asset capture reliability in specific environments.

New features​

• Added the FS('getConfig') API to provide easier access to integration configurations.

Bug fixes​

• Fixed an issue where session capture might fail to resume correctly during a page split if captureOnStartup was set to false.