Issues

• Every @ClientCallable argument triggers a ServiceLoader classpath scan (DeprecatedPolymerPublishedEventHandler lookup is never cached)

  vaadin/flow#26972 · Filter by author koendecock opened on Nov 11, 2026
  1

• CSS imports in React views fail the TypeScript check, because types.d.ts doesn't declare them

  vaadin/flow#26970 · Filter by author peholmst opened on Nov 11, 2026
  1

• Client keeps a rejected value when a signal write callback leaves the signal unchanged

  vaadin/flow#26965 · Filter by author caalador opened on Nov 11, 2026
  1

• Page load of a React view checks rolesAllowed without the role prefix

  vaadin/flow#26962 · Filter by author peholmst opened on Nov 11, 2026
  1

• Put @DomEvent(filter=…) values that are not property paths into the bundle

  csp
  Feature

  vaadin/flow#26961 · Filter by author mcollovati opened on Nov 10, 2026
  1

• Let components and add-ons declare their own JsSnippet types

  csp
  Feature

  vaadin/flow#26956 · Filter by author mcollovati opened on Nov 10, 2026
  17

• generate-npm-sbom should inherit the current Maven invocation configuration

  Impact: Lowmaven-pluginSeverity: Minor
  Bug

  vaadin/flow#26954 · Filter by author beth-soptim opened on Nov 10, 2026
  1

• Move generate-npm-sbom to @cyclonedx/cyclonedx-npm 7.x

  Task

  vaadin/flow#26922 · Filter by author totally-not-ai opened on Nov 9, 2026
  1

• Opt-in HTTP 404 on the initial request for unknown routes, without eagerServerLoad

  needs designrouting
  Feature

  vaadin/flow#26910 · Filter by author mvysny opened on Nov 9, 2026
  1

• Resynchronization request over WebSocket push is never answered, UI stops updating

  Impact: LowpushSeverity: Major
  Bug

  vaadin/flow#26901 · Filter by author mcollovati opened on Nov 9, 2026
  1

• Dev loop (vaadin-dev): support Gradle builds

  gradle
  Feature

  vaadin/flow#26893 · Filter by author mvysny opened on Nov 8, 2026
  1

• Web Push: a notification cannot link anywhere but the root — and the only way around it is replacing Vaadin's whole service worker

  needs designpwa
  Feature

  vaadin/flow#26891 · Filter by author mstahv opened on Nov 6, 2026
  3

• Put @EventData values that are not property paths into the bundle

  csp
  Task

  vaadin/flow#26881 · Filter by author mcollovati opened on Nov 6, 2026
  1

• Gradle: vaadinBuildFrontend serves a stale bundle when declared JavaScript in a dependency jar changes but the jar size does not

  buggradleImpact: LowSeverity: Minor
  Bug

  vaadin/flow#26862 · Filter by author mcollovati opened on Nov 5, 2026
  1

• [aw] Diagram Bot failed

  agentic-workflows
  vaadin/flow#26860 · Filter by author github-actions opened on Nov 5, 2026
  1

• TransferProgressAwareHandler.uiAccess throws UIDetachedException if the UI was closed during the transfer

  bugImpact: LowSeverity: Minorworkaround
  Bug

  vaadin/flow#26848 · Filter by author MarioTrappein opened on Nov 4, 2026
  4

• Push: "Failed to cancel resource" ERROR with IllegalStateException [TEXT_FULL_WRITING] when client closes WebSocket during async write

  bugImpact: LowpushSeverity: Minor
  Bug

  vaadin/flow#26847 · Filter by author MarioTrappein opened on Nov 4, 2026
  4

• NPE in AtmosphereRequestImpl.getSession during PushHandler.connectionLost (race when the push connection is closed)

  bugImpact: LowpushSeverity: Minor
  Bug

  vaadin/flow#26846 · Filter by author MarioTrappein opened on Nov 4, 2026
  3

• Add @JsReturnsFunction for JsFunction snippets that return the function itself

  csp
  Feature

  vaadin/flow#26834 · Filter by author totally-not-ai opened on Nov 3, 2026
  2

• HasValidation.bindErrorMessage(Signal<String>): one-way, and null means valid

  needs designsignals
  Feature

  vaadin/flow#26829 · Filter by author peholmst opened on Nov 2, 2026
  1

• Loading indicator not displayed for requests run via keyboard shortcuts

  bugImpact: HighregressionSeverity: Minor
  Bug

  vaadin/flow#26821 · Filter by author mpschweizer opened on Nov 2, 2026
  3

• vaadin-spring: @RouteScope beans are shared by all UIs with the same window.name (Spring twin of vaadin/cdi#526)

  bugImpact: LowSeverity: Majorspring
  Bug

  vaadin/flow#26820 · Filter by author DzmitryZaitsauIG opened on Nov 2, 2026
  3

• Document how to add JSpecify nullability annotations to existing public API

  documentation
  Task

  vaadin/flow#26792 · Filter by author totally-not-ai opened on Nov 2, 2026
  1

• Run the project's tests from the dev loop without restarting the app

  development modeDXneeds design
  Feature

  vaadin/flow#26783 · Filter by author peholmst opened on Oct 31, 2026
  1

• Dev Loop: status (or any command) spawns the daemon and locks the env, causing surprises

  development modeDXImpact: Low
  Bug

  vaadin/flow#26781 · Filter by author emarc opened on Oct 30, 2026
  4