Fix chat doesn't scroll when splitting expense

src/libs/actions/IOU.ts

@@ -1011,6 +1011,7 @@ function buildOnyxDataForMoneyRequest(moneyRequestParams: BuildOnyxDataForMoneyR
             value: {
                 ...chat.report,
                 lastReadTime: DateUtils.getDBTime(),
+                ...(shouldCreateNewMoneyRequestReport ? {lastVisibleActionCreated: chat.reportPreviewAction.created} : {}),
                 iouReportID: iou.report.reportID,
                 ...outstandingChildRequest,
                 ...(isNewChatReport ? {pendingFields: {createChat: CONST.RED_BRICK_ROAD_PENDING_ACTION.ADD}} : {}),
@@ -1278,6 +1279,7 @@ function buildOnyxDataForMoneyRequest(moneyRequestParams: BuildOnyxDataForMoneyR
             value: {
                 iouReportID: chat.report?.iouReportID,
                 lastReadTime: chat.report?.lastReadTime,
+                lastVisibleActionCreated: chat.report?.lastVisibleActionCreated,
                 pendingFields: null,
                 hasOutstandingChildRequest: chat.report?.hasOutstandingChildRequest,
                 ...(isNewChatReport

tests/actions/IOUTest.ts

@@ -1750,6 +1750,49 @@ describe('actions/IOU', () => {
                         }),
                 );
         });
+
+        it('should update split chat report lastVisibleActionCreated to the report preview action', async () => {
+            // Given a workspace chat with no expenses
+            const workspaceReportID = '1';
+            await Onyx.merge(`${ONYXKEYS.COLLECTION.REPORT}${workspaceReportID}`, {reportID: workspaceReportID, isOwnPolicyExpenseChat: true});
+
+            // When the user split bill on the workspace
+            splitBill({
+                participants: [{reportID: workspaceReportID}],
+                currentUserLogin: RORY_EMAIL,
+                currentUserAccountID: RORY_ACCOUNT_ID,
+                comment: '',
+                amount: 100,
+                currency: CONST.CURRENCY.USD,
+                merchant: 'test',
+                created: '',
+                existingSplitChatReportID: workspaceReportID,
+            });
+
+            await waitForBatchedUpdates();
+
+            // Then the workspace chat lastVisibleActionCreated should be updated to the report preview action created
+            const reportPreviewAction = await new Promise<OnyxEntry<ReportAction>>((resolve) => {
+                const connection = Onyx.connect({
+                    key: `${ONYXKEYS.COLLECTION.REPORT_ACTIONS}${workspaceReportID}`,
+                    callback: (reportActions) => {
+                        Onyx.disconnect(connection);
+                        resolve(Object.values(reportActions ?? {}).find((action) => action.actionName === CONST.REPORT.ACTIONS.TYPE.REPORT_PREVIEW));
+                    },
+                });
+            });
+
+            await new Promise<OnyxEntry<Report>>((resolve) => {
+                const connection = Onyx.connect({
+                    key: `${ONYXKEYS.COLLECTION.REPORT}${workspaceReportID}`,
+                    callback: (report) => {
+                        Onyx.disconnect(connection);
+                        expect(report?.lastVisibleActionCreated).toBe(reportPreviewAction?.created);
+                        resolve(report);
+                    },
+                });
+            });
+        });
     });
 
     describe('payMoneyRequestElsewhere', () => {