diff --git a/frontend/src/components/group/GroupDeleteButton.tsx b/frontend/src/components/group/GroupDeleteButton.tsx
index 2fb82a5..8e2aea4 100644
--- a/frontend/src/components/group/GroupDeleteButton.tsx
+++ b/frontend/src/components/group/GroupDeleteButton.tsx
@@ -34,7 +34,7 @@ export function GroupDeleteButton({resource}: GroupDeleteButtonProps): JSX.Eleme
     }
 
     return (
-        <SafetyButton timeout={5} onClick={doDelete}>
+        <SafetyButton timeout={3} onClick={doDelete}>
             <FontAwesomeIcon icon={faTrash} pulse={resource.busy}/>&nbsp;Delete
         </SafetyButton>
     )
diff --git a/frontend/src/components/group/GroupJoinButton.tsx b/frontend/src/components/group/GroupJoinButton.tsx
index 6066648..9fe29cc 100644
--- a/frontend/src/components/group/GroupJoinButton.tsx
+++ b/frontend/src/components/group/GroupJoinButton.tsx
@@ -15,7 +15,7 @@ export interface GroupJoinButtonProps {
 export function GroupJoinButton({resource}: GroupJoinButtonProps): JSX.Element | null {
     const authorization = useAuthorizationContext()
 
-    const trueMembers = [resource.value.owner, ...resource.value.members]
+    const trueMembers = [...new Set([resource.value.owner, ...resource.value.members])]
 
     const doJoin =
         React.useCallback(
diff --git a/frontend/src/components/group/GroupLeaveButton.tsx b/frontend/src/components/group/GroupLeaveButton.tsx
index e6659fb..90f68f3 100644
--- a/frontend/src/components/group/GroupLeaveButton.tsx
+++ b/frontend/src/components/group/GroupLeaveButton.tsx
@@ -1,10 +1,10 @@
 import {faUserMinus} from "@fortawesome/free-solid-svg-icons"
 import {FontAwesomeIcon} from "@fortawesome/react-fontawesome"
-import {Button} from "@steffo/bluelib-react"
 import * as React from "react"
 import {useAuthorizationContext} from "../../contexts/authorization"
 import {ManagedResource} from "../../hooks/useManagedViewSet"
 import {SophonResearchGroup} from "../../types/SophonTypes"
+import {SafetyButton} from "../elements/SafetyButton"
 
 
 export interface GroupLeaveButtonProps {
@@ -15,7 +15,7 @@ export interface GroupLeaveButtonProps {
 export function GroupLeaveButton({resource}: GroupLeaveButtonProps): JSX.Element | null {
     const authorization = useAuthorizationContext()
 
-    const trueMembers = [resource.value.owner, ...resource.value.members]
+    const trueMembers = [...new Set([resource.value.owner, ...resource.value.members])]
 
     const doLeave =
         React.useCallback(
@@ -39,8 +39,8 @@ export function GroupLeaveButton({resource}: GroupLeaveButtonProps): JSX.Element
     }
 
     return (
-        <Button disabled={resource.busy} onClick={doLeave} bluelibClassNames={resource.busy ? "color-yellow" : ""}>
+        <SafetyButton timeout={3} disabled={resource.busy} onClick={doLeave} bluelibClassNames={resource.busy ? "color-yellow" : ""}>
             <FontAwesomeIcon icon={faUserMinus} pulse={resource.busy}/>&nbsp;Leave
-        </Button>
+        </SafetyButton>
     )
 }
diff --git a/frontend/src/components/group/GroupResourcePanel.tsx b/frontend/src/components/group/GroupResourcePanel.tsx
index 6c63e67..7687201 100644
--- a/frontend/src/components/group/GroupResourcePanel.tsx
+++ b/frontend/src/components/group/GroupResourcePanel.tsx
@@ -18,7 +18,7 @@ export interface GroupResourcePanelProps {
 export function GroupResourcePanel({resource}: GroupResourcePanelProps): JSX.Element {
     const icon = resource.value.access === "OPEN" ? faGlobe : faEnvelope
 
-    const trueMembers = [resource.value.owner, ...resource.value.members]
+    const trueMembers = [...new Set([resource.value.owner, ...resource.value.members])]
 
     return (
         <ResourcePanel>
diff --git a/frontend/tsconfig.json b/frontend/tsconfig.json
index 27186b9..5027a9a 100644
--- a/frontend/tsconfig.json
+++ b/frontend/tsconfig.json
@@ -1,6 +1,6 @@
 {
     "compilerOptions": {
-        "target": "es5",
+        "target": "es6",
         "lib": [
             "dom",
             "dom.iterable",