diff --git a/matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt b/matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt
index 8a94fa30f7..48ff66720f 100644
--- a/matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt
+++ b/matrix-sdk-android-rx/src/main/java/im/vector/matrix/rx/RxRoom.kt
@@ -35,10 +35,12 @@ class RxRoom(private val room: Room) {
 
     fun liveRoomMembers(memberships: List<Membership>): Observable<List<RoomMember>> {
         return room.getRoomMembersLive(memberships).asObservable()
+                .startWith(room.getRoomMembers(memberships))
     }
 
     fun liveAnnotationSummary(eventId: String): Observable<Optional<EventAnnotationsSummary>> {
-        return room.getEventSummaryLive(eventId).asObservable()
+        return room.getEventAnnotationsSummaryLive(eventId).asObservable()
+                .startWith(room.getEventAnnotationsSummary(eventId).toOptional())
     }
 
     fun liveTimelineEvent(eventId: String): Observable<Optional<TimelineEvent>> {
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/members/MembershipService.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/members/MembershipService.kt
index 12f0378af7..281697816c 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/members/MembershipService.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/members/MembershipService.kt
@@ -41,6 +41,14 @@ interface MembershipService {
      */
     fun getRoomMember(userId: String): RoomMember?
 
+
+    /**
+     * Return all the roomMembers of the room filtered by memberships
+     * @param memberships list of accepted memberships
+     * @return a roomMember list.
+     */
+    fun getRoomMembers(memberships: List<Membership>): List<RoomMember>
+
     /**
      * Return all the roomMembers of the room filtered by memberships
      * @param memberships list of accepted memberships
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/relation/RelationService.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/relation/RelationService.kt
index 7d8f2f0bc1..d13d7db773 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/relation/RelationService.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/api/session/room/model/relation/RelationService.kt
@@ -108,5 +108,17 @@ interface RelationService {
                        replyText: CharSequence,
                        autoMarkdown: Boolean = false): Cancelable?
 
-    fun getEventSummaryLive(eventId: String): LiveData<Optional<EventAnnotationsSummary>>
+    /**
+     * Get the current EventAnnotationsSummary
+     * @param eventId the eventId to look for EventAnnotationsSummary
+     * @return the EventAnnotationsSummary found
+     */
+    fun getEventAnnotationsSummary(eventId: String): EventAnnotationsSummary?
+
+    /**
+     * Get the a LiveData EventAnnotationsSummary
+     * @param eventId the eventId to look for EventAnnotationsSummary
+     * @return the LiveData of EventAnnotationsSummary
+     */
+    fun getEventAnnotationsSummaryLive(eventId: String): LiveData<Optional<EventAnnotationsSummary>>
 }
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/DefaultMembershipService.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/DefaultMembershipService.kt
index 2b89f86d3e..789b783e3f 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/DefaultMembershipService.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/membership/DefaultMembershipService.kt
@@ -64,6 +64,17 @@ internal class DefaultMembershipService @AssistedInject constructor(@Assisted pr
         return roomMemberEntity?.asDomain()
     }
 
+    override fun getRoomMembers(memberships: List<Membership>): List<RoomMember> {
+        return monarchy.fetchAllMappedSync(
+                {
+                    RoomMembers(it, roomId).queryRoomMembersEvent()
+                },
+                {
+                    it.asDomain()
+                }
+        )
+    }
+
     override fun getRoomMembersLive(memberships: List<Membership>): LiveData<List<RoomMember>> {
         return monarchy.findAllMappedWithChanges(
                 {
diff --git a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/DefaultRelationService.kt b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/DefaultRelationService.kt
index 8731045e14..180776ba8d 100644
--- a/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/DefaultRelationService.kt
+++ b/matrix-sdk-android/src/main/java/im/vector/matrix/android/internal/session/room/relation/DefaultRelationService.kt
@@ -215,7 +215,16 @@ internal class DefaultRelationService @AssistedInject constructor(@Assisted priv
         return TimelineSendEventWorkCommon.createWork<SendEventWorker>(sendWorkData, startChain)
     }
 
-    override fun getEventSummaryLive(eventId: String): LiveData<Optional<EventAnnotationsSummary>> {
+    override fun getEventAnnotationsSummary(eventId: String): EventAnnotationsSummary? {
+        return monarchy.fetchCopyMap(
+                { EventAnnotationsSummaryEntity.where(it, eventId).findFirst() },
+                { entity, _ ->
+                    entity.asDomain()
+                }
+        )
+    }
+
+    override fun getEventAnnotationsSummaryLive(eventId: String): LiveData<Optional<EventAnnotationsSummary>> {
         val liveData = monarchy.findAllMappedWithChanges(
                 { EventAnnotationsSummaryEntity.where(it, eventId) },
                 { it.asDomain() }