diff --git a/packages/insomnia/src/ui/components/modals/workspace-delete-modal.tsx b/packages/insomnia/src/ui/components/modals/workspace-delete-modal.tsx
index bc1f1407ad..d99b0f0e78 100644
--- a/packages/insomnia/src/ui/components/modals/workspace-delete-modal.tsx
+++ b/packages/insomnia/src/ui/components/modals/workspace-delete-modal.tsx
@@ -1,6 +1,5 @@
 import type { Project, Workspace } from 'insomnia-data';
 import { models } from 'insomnia-data';
-import { useEffect, useRef } from 'react';
 import { Button, Dialog, Heading, Label, Modal, ModalOverlay, Radio, RadioGroup } from 'react-aria-components';
 import { href } from 'react-router';
 
@@ -13,38 +12,25 @@ interface Props {
   workspace: Workspace;
   project: Project;
   organizationId: string;
+  // Driven by the host: it closes once the workspace is gone, so the overlay can play its exit animation
+  isOpen: boolean;
   onClose: () => void;
-  onDeleted?: () => void;
 }
 
-export const WorkspaceDeleteModal = ({ workspace, project, organizationId, onClose, onDeleted }: Props) => {
+export const WorkspaceDeleteModal = ({ workspace, project, organizationId, isOpen, onClose }: Props) => {
   const deleteWorkspaceFetcher = useWorkspaceDeleteActionFetcher();
   const workspaceId = workspace._id;
   const workspaceName = workspace.name;
 
-  // Close once the deletion succeeds (the action redirects, so no error data is returned)
-  const wasSubmitting = useRef(false);
-  useEffect(() => {
-    if (deleteWorkspaceFetcher.state !== 'idle') {
-      wasSubmitting.current = true;
-    } else if (wasSubmitting.current) {
-      wasSubmitting.current = false;
-      if (!deleteWorkspaceFetcher.data?.error) {
-        onDeleted?.();
-        onClose();
-      }
-    }
-  }, [deleteWorkspaceFetcher.state, deleteWorkspaceFetcher.data, onClose, onDeleted]);
-
   return (
     <ModalOverlay
-      isOpen
-      onOpenChange={() => onClose()}
+      isOpen={isOpen}
+      onOpenChange={open => !open && onClose()}
       isDismissable
-      className="fixed top-0 left-0 z-10 flex h-(--visual-viewport-height) w-full items-center justify-center bg-black/30"
+      className="fixed top-0 left-0 z-10 flex h-(--visual-viewport-height) w-full items-center justify-center bg-black/30 transition-opacity duration-150 data-exiting:opacity-0"
     >
       <Modal
-        onOpenChange={() => onClose()}
+        onOpenChange={open => !open && onClose()}
         className="max-h-full w-full max-w-2xl rounded-md border border-solid border-(--hl-sm) bg-(--color-bg) p-(--padding-lg) text-(--color-font)"
       >
         <Dialog className="outline-hidden">
diff --git a/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/project-navigation-sidebar.tsx b/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/project-navigation-sidebar.tsx
index 559835ec7b..8e4121767b 100644
--- a/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/project-navigation-sidebar.tsx
+++ b/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/project-navigation-sidebar.tsx
@@ -660,6 +660,7 @@ const ProjectNavigationSidebarInner = (
   const [shortcutTargetItemId, setShortcutTargetItemId] = useState<string | null>(null);
   const showRenameModal = useRenameModal();
   const { showDeleteModal, deleteModal } = useDeleteModal({
+    flatItems,
     onDeleteProject: projectId => deleteProjectFetcher.submit({ organizationId, projectId }),
     // Leave focus mode when its collection is deleted, otherwise the view is left empty
     onWorkspaceDeleted: workspaceId => {
diff --git a/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/use-delete-modal.tsx b/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/use-delete-modal.tsx
index 6640f6d258..060505bf17 100644
--- a/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/use-delete-modal.tsx
+++ b/packages/insomnia/src/ui/components/sidebar/project-navigation-sidebar/use-delete-modal.tsx
@@ -1,5 +1,5 @@
 import { models, services } from 'insomnia-data';
-import { useState } from 'react';
+import { useEffect, useState } from 'react';
 
 import { useRequestDeleteActionFetcher } from '~/routes/organization.$organizationId.project.$projectId.workspace.$workspaceId.debug.request.delete';
 import { useRequestGroupDeleteActionFetcher } from '~/routes/organization.$organizationId.project.$projectId.workspace.$workspaceId.debug.request-group.delete';
@@ -8,21 +8,42 @@ import { AskModal } from '~/ui/components/modals/ask-modal';
 import { WorkspaceDeleteModal } from '~/ui/components/modals/workspace-delete-modal';
 
 import { getRequestNameOrFallback } from './request-node';
-import type { CollectionChildFlatItem, PinnedRequestFlatItem, ProjectFlatItem, WorkspaceFlatItem } from './types';
+import type {
+  CollectionChildFlatItem,
+  FlatItem,
+  PinnedRequestFlatItem,
+  ProjectFlatItem,
+  WorkspaceFlatItem,
+} from './types';
 
 export type DeleteTargetItem = ProjectFlatItem | WorkspaceFlatItem | CollectionChildFlatItem | PinnedRequestFlatItem;
 
 interface Options {
+  // Unfiltered sidebar items, used to notice when the workspace being deleted is gone
+  flatItems: FlatItem[];
   onDeleteProject: (projectId: string) => void;
   onWorkspaceDeleted?: (workspaceId: string) => void;
 }
 
 // Returns a function to open the delete confirmation for projects, workspaces, request groups, and requests,
 // plus the element that hosts the workspace confirmation, which must be rendered once by the caller.
-export const useDeleteModal = ({ onDeleteProject, onWorkspaceDeleted }: Options) => {
+export const useDeleteModal = ({ flatItems, onDeleteProject, onWorkspaceDeleted }: Options) => {
   const deleteRequestFetcher = useRequestDeleteActionFetcher();
   const deleteRequestGroupFetcher = useRequestGroupDeleteActionFetcher();
+  // Kept after closing so the modal can play its exit animation
   const [workspaceToDelete, setWorkspaceToDelete] = useState<WorkspaceFlatItem | null>(null);
+  const [isWorkspaceModalOpen, setIsWorkspaceModalOpen] = useState(false);
+
+  // The workspace disappearing from the sidebar is the signal that the deletion succeeded.
+  // On failure (e.g. a remote error) it stays, so the modal remains open to show the error.
+  const isWorkspaceGone =
+    !!workspaceToDelete && !flatItems.some(i => i.kind === 'workspace' && i.doc._id === workspaceToDelete.doc._id);
+  useEffect(() => {
+    if (isWorkspaceModalOpen && isWorkspaceGone) {
+      setIsWorkspaceModalOpen(false);
+      onWorkspaceDeleted?.(workspaceToDelete.doc._id);
+    }
+  }, [isWorkspaceModalOpen, isWorkspaceGone, workspaceToDelete, onWorkspaceDeleted]);
 
   const showDeleteModal = (item: DeleteTargetItem) => {
     if (item.kind === 'project') {
@@ -65,6 +86,7 @@ export const useDeleteModal = ({ onDeleteProject, onWorkspaceDeleted }: Options)
         return;
       }
       setWorkspaceToDelete(item);
+      setIsWorkspaceModalOpen(true);
       return;
     }
 
@@ -113,11 +135,12 @@ export const useDeleteModal = ({ onDeleteProject, onWorkspaceDeleted }: Options)
 
   const deleteModal = workspaceToDelete && (
     <WorkspaceDeleteModal
+      key={workspaceToDelete.doc._id}
+      isOpen={isWorkspaceModalOpen}
       workspace={workspaceToDelete.doc}
       project={workspaceToDelete.project}
       organizationId={workspaceToDelete.organizationId}
-      onClose={() => setWorkspaceToDelete(null)}
-      onDeleted={() => onWorkspaceDeleted?.(workspaceToDelete.doc._id)}
+      onClose={() => setIsWorkspaceModalOpen(false)}
     />
   );