--- sourceDocument: Yokohama Release Notes sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/release-notes Release : - yokohama ft:locale : - en-US ft:publication_title : - Yokohama Release Notes ft:clusterId : - rn bundleId : - rn --- # Yokohama Patch 4 Hotfix 1 # Yokohama Patch 4 Hotfix 1 {#ariaid-title1} Release version: Yokohama Updated July 1, 2025 ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read Summarize ![AI sparkle icon](https://servicenow.com/docs/portal-asset/ai-sparkle-icon) Summarized using AI This content was generated using new OpenAI-powered functionality. Results are provided on an as is basis and are not guaranteed to be accurate or complete. ## Summary of Yokohama Patch 4 Hotfix 1 The Yokohama Patch 4 Hotfix 1 release for ServiceNow, updated on July 1, 2025, addresses specific issues identified after upgrading to the Yokohama release. This hotfix ensures stability and improved functionality for affected features such as Process Mining, Agent Chat, and the Asynchronous Message Bus (AMB). Show full answer Show less The build information for this release is dated June 28, 2025, with the build tag *glide-yokohama-12-18-2024patch4-hotfix1-06-24-2025*. Customers using regulated market environments can also access this major AI Platform release. ## Key Fixes * **Process Mining Filter Sets and Scheduled Tasks Deletion (PRB1903878):** During upgrades from Xanadu to Yokohama, saved filter sets and scheduled tasks for Process Mining Projects were unintentionally deleted due to backend script issues, especially affecting configurations with transition filters linked to scheduled tasks. This fix prevents such deletions, preserving user configurations and avoiding functionality disruption. * **Agent Chat Inbox Audio Delay (PRB1900981):** Audio notifications for new work items were delayed when the Workspace tab was inactive or out of focus, causing agents to miss timely alerts. This fix ensures audio plays promptly upon assignment, improving agent responsiveness. * **Asynchronous Message Bus (AMB) Record Watcher Issue (PRB1910946):** When the AMB lazy load setting is disabled (*glide.amb.message.lazy.load = false*), record updates in one browser were not reflected in another. This update restores real-time synchronization across multiple browser sessions, ensuring data consistency. ## Upgrade Guidance Customers can safely upgrade to Yokohama Patch 4 Hotfix 1 from any prior Yokohama patch versions (Patch 1 through Patch 4). This release includes fixes from previous patches, consolidating all relevant problem resolutions. For detailed upgrade instructions, customers should refer to the official ServiceNow upgrade documentation. The Yokohama Patch 4 Hotfix 1 release contains fixes to these problems. Build information: : Build date: 06-28-2025_2229 : Build tag: glide-yokohama-12-18-2024__patch4-hotfix1-06-24-2025 Important: For more information about how to upgrade an instance, see [ServiceNow upgrades](https://servicenow-prod.fluidtopics.net/gT4zpGHCQSL790audteXjw "The upgrade process moves your instance to a new ServiceNow release version. Understand the difference between upgrading and patching, release definitions, rollback and backup options, and how to test your non-production and production instance upgrades."). For more information about the release cycle, see the [ServiceNow Release Cycle](https://support.servicenow.com/kb_view.do?sysparm_article=KB0547244).{#yokohama-patch-4-hf-1-PO__p_download-version} Note: This ServiceNow AI Platform major family release is now available in ServiceNow's Regulated Market environments. For more information about services available in isolated environments, see [KB0743854](https://support.servicenow.com/kb_view.do?sysparm_article=KB0743854). ## Fixed problem {#yokohama-patch-4-hf-1-PO__section_bpj_khz_tfc} {#yokohama-patch-4-hf-1-PO__all-other-fixes__entry__4} | Problem | Short description | Description | Steps to reproduce | |-|-|-|-| | Process Mining PRB1903878 [KB2229304](https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2229304) | After upgrading from the Xanadu to Yokohama release, process mining filter sets and scheduled tasks are deleted | During the upgrade from Xanadu to Yokohama, the process mining filter set conditions and scheduled tasks are being deleted. Due to a backend issue, the upgrade script execution unintentionally deletes saved filter sets and scheduled tasks of Process Mining Projects. This particularly affects configurations with 'transition filters' linked to scheduled tasks. Although no other user data was affected, this issue may disrupt functionality where the deleted filter sets or scheduled tasks were actively used. | Refer to the listed KB article for details. | | Agent Chat PRB1900981 [KB2226265](https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB2226265) | Inbox audio is delayed when the 'Workspace' tab is inactive or out of focus before receiving the first work item | When the work item assigned, audio isn't heard. Audio is heard only after switching back to the workspace. The agent may not get notified at the time of assignment due to this issue, and the work item may expired by the time agent is back on the workspace tab. | Refer to the listed KB article for details. | | Asynchronous Message Bus (AMB) PRB1910946 | The Record Watcher (RW) Asynchronous Message Bus (AMB) message censor doesn't work when AMB lazy load is disabled | When glide.amb.message. lazy.load is set to 'false', having a record open in two browsers and updating it in one doesn't update it in the other browser. | 1. Set glide.amb.message.lazy.load to 'false'. 2. Open a record in two different browsers. 3. Update the record in one browser. 4. Notice that the Record field in the other browser window isn't updated. {#yokohama-patch-4-hf-1-PO__ol_fxw_rq1_wfc} | [ ] {#yokohama-patch-4-hf-1-PO__all-other-fixes} ## Fixes included {#yokohama-patch-4-hf-1-PO__section_cpj_khz_tfc} Unless any exceptions are noted, you can safely upgrade to this release version from any of the versions listed below. These prior versions contain PRB fixes that are also included with this release. Be sure to upgrade to the latest listed patch that includes all of the PRB fixes you are interested in. * [Yokohama Patch 4](https://servicenow-prod.fluidtopics.net/0NZMP7lTOVEOXCW5pwnSdQ "The Yokohama Patch 4 release contains important problem fixes.") * [Yokohama Patch 3](https://servicenow-prod.fluidtopics.net/jXrkPnnmOuaGleV7JYQPtA "The Yokohama Patch 3 release contains important problem fixes.") * [Yokohama Patch 2](https://servicenow-prod.fluidtopics.net/gTw0R2nzVMQBcbdPC0soDw "The Yokohama Patch 2 release contains important problem fixes.") * [Yokohama Patch 1](https://servicenow-prod.fluidtopics.net/HPuS6cI3Q9FclhqSglkLPQ "The Yokohama Patch 1 release contains important problem fixes.") * [Yokohama security and notable fixes](https://servicenow-prod.fluidtopics.net/zY12c3el4NQneYtiA4kD1A "The Yokohama release contains important problem fixes.") * [All other Yokohama fixes](https://servicenow-prod.fluidtopics.net/xk4JxNj~_l2ZYEt921KFzA "The Yokohama release contains important problem fixes.") {#yokohama-patch-4-hf-1-PO__ul_bkc_k3z_tfc}