# Dify 1.16.1 — Release v1.16.1 - Bug Fixes and Security Enhancements

- Product: Dify (https://whatsnew.fyi/product/dify)
- Vendor: LangGenius
- Date: 2026-07-28
- Version: 1.16.1
- Original notes: https://github.com/langgenius/dify/releases/tag/1.16.1
- Permalink: https://whatsnew.fyi/product/dify/releases/1.16.1

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **added** — Workflow tool nodes now support multi-select dropdown inputs for choosing multiple values from a predefined list when configuring tool parameters
- **added** — Click a node_id in workflow run logs or error messages to locate and highlight the corresponding node in the workflow editor canvas
- **added** — Block selector panel now features improved keyboard navigation, category previews, and a more intuitive search experience when adding nodes to workflows
- **added** — Agent apps can now be exported as DSL YAML directly from the app sidebar menu
- **added** — Added more observability traces to knowledge/RAG document processing operations
- **fixed** — Fixed hidden-tab collaboration leader saving stale drafts when the tab is inactive
- **fixed** — Fixed unsaved edits being dropped when collaboration never connects
- **fixed** — Preserved latest collaboration session after reconnection
- **fixed** — Fixed false draft save error during Strict Mode initialization
- **fixed** — Show persistent error notification when workflow draft save fails
- **fixed** — Wait for workflow worker threads to finish before Celery tasks complete, preventing orphaned executions
- **fixed** — Lazy-load Loro collaboration runtime to reduce initial bundle size
- **fixed** — Don't open node settings panel when clicking a node in comment mode
- **fixed** — Don't close active comment panel when a different comment is resolved
- **fixed** — Fixed document cleaner stripping valid characters ï, ¿, ¾
- **fixed** — Preserved spaces during recursive text splitting
- **fixed** — Used flush() instead of commit() in dataset service to preserve caller transaction boundaries
- **fixed** — Sent valid body in external knowledge validation probe
- **fixed** — Fixed agent preview: start new Preview conversations without inheriting an old ID
- **fixed** — Fixed agent chat input being replaced when conversation history updates

##### What's Changed

###### New Features
**Tool Multi-Select Input**
- Workflow tool nodes now support multi-select dropdown inputs, allowing users to choose multiple values from a predefined list when configuring tool parameters. (#39346)

**Workflow Node Locator**
- You can now click a node_id in workflow run logs or error messages to locate and highlight the corresponding node in the workflow editor canvas. (#38187)

**Workflow Block Selector Improvements**
- The block selector panel now features improved keyboard navigation, category previews, and a more intuitive search experience when adding nodes to workflows. (#39212)

**Export Agent DSL from Sidebar**
- Agent apps can now be exported as DSL YAML directly from the app sidebar menu, making it easy to back up or version-control agent configurations. (#39299)

**Knowledge Tracing**
- Added more observability traces to knowledge/RAG document processing operations, improving visibility into indexing pipelines. (#38959)


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###### Bug Fixes

**Workflow & Collaboration**
- Fixed hidden-tab collaboration leader saving stale drafts when the tab is inactive (#38997)
- Fixed unsaved edits being dropped when collaboration never connects (#39579)
- Preserved latest collaboration session after reconnection (#39646)
- Fixed false draft save error during Strict Mode initialization (#39353)
- Show persistent error notification when workflow draft save fails (#39293)
- Wait for workflow worker threads to finish before Celery tasks complete, preventing orphaned executions (#39614)
- Lazy-load Loro collaboration runtime to reduce initial bundle size (#39631)
- Don't open node settings panel when clicking a node in comment mode (#39500)
- Don't close active comment panel when a different comment is resolved (#39491)

**RAG & Knowledge**
- Fixed document cleaner stripping valid characters ï (U+00EF), ¿ (U+00BF), ¾ (U+00BE) (#39215)
- Preserved spaces during recursive text splitting (#39498)
- Used `flush()` instead of `commit()` in dataset service to preserve caller transaction boundaries (#39223)
- Sent valid body in external knowledge validation probe (#39410)

**Agent**
- Fixed agent preview: start new Preview conversations without inheriting an old ID (#39463)
- Fixed agent chat input being replaced when conversation history updates (#39289)
- Preserved complete model usage pricing in agent logs (#39201)
- Show workflow node runs in agent execution logs (#39471)
- Include workflow runs in agent monitoring stats (#39354)
- Block unpublished agents from being used in workflows (#39532)
- Prevent agent preview actions from being clipped (#39510)
- Prevent build reset from clearing preview chat history (#39490)
- Fixed agent build draft UI flashing during apply (#39642)

**Web App & UI**
- Fixed webapp JWT expiration time being incorrectly set (#39537)
- Fixed TTS playback in Safari and Firefox (#39444)
- Fixed clipboard writes failing in embedded apps (#39511)
- Fixed text generation web app showing infinite loading after timeout (#39268)
- Fixed chat not passing document if model doesn't support vision (#39461)
- Stopped chunk length/overlap inputs collapsing to unusable width in narrow containers (#39600)
- Fixed search hotkey hydration mismatch (#39574)
- Improved DSL import/export dialog states (#39432, #39409)
- Fixed basePath doubling in auth refresh redirects (#39273)
- Show unavailable state for disabled Web Apps (#39392)
- Fixed permission selector semantics (#39269)
- Fixed customization page horizontal overflow (#39557)

**API & Backend**
- Fixed MCP tool `output_schema` being treated as required when it's optional (#39453)
- Honored array-element limit and byte budget for `list[File]` in VariableTruncator (#39220)
- Prevented identity logging deadlock (#39449)
- Rejected `host:port`-shaped `PLUGIN_REMOTE_INSTALL_PORT` values with an actionable hint (#39329)
- Fixed `PaginatedResult.pages` returning 1 inst

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