diff --git a/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/components/PanelButtons.test.js b/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/components/PanelButtons.test.js
index 553b90a811852c5b6688fecb1906968bf46984bb..00b2ffe6c76cfd77e54211eea659620dd67cef37 100644
--- a/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/components/PanelButtons.test.js
+++ b/SAS/TMSS/frontend/tmss_webapp/src/routes/Timeline/components/PanelButtons.test.js
@@ -28,8 +28,8 @@ describe('PanelButtons', () => {
     });
 
       it('adjusts left panel size when summary is not active', async () => {
-        const setLeftPanelSizeMock = jest.fn();
-        const pannelComponent = render(<PanelButtons
+        let setLeftPanelSizeMock = jest.fn();
+        const pannelComponent  = render(<PanelButtons
             showLegendbar={false}
             setShowLegendbar={jest.fn()}
             showListTabs={true}
@@ -38,7 +38,7 @@ describe('PanelButtons', () => {
             leftPanelSize={20}
             setLeftPanelSize={setLeftPanelSizeMock} />);
 
-        await waitFor(() => expect(pannelComponent.getByTitle(shrinkLabel).tobeinTheDocument));
+            await waitFor(() => expect(pannelComponent.getByTitle(shrinkLabel).tobeinTheDocument));
         const shrinkButton = pannelComponent.getByTitle(shrinkLabel);
         clickItem(shrinkButton)
         expect(setLeftPanelSizeMock).toHaveBeenCalledWith(10); // 10% shrink
@@ -47,11 +47,16 @@ describe('PanelButtons', () => {
 
         clickItem(expandButton)
         expect(setLeftPanelSizeMock).toHaveBeenCalledWith(30); // 10% expand
+        setLeftPanelSizeMock=null;
     });
 
+
+    // this test can fail, allthough it's good. SOmething with Jest and React 18 running compatibility mode
     it('disables resize buttons when summary is active', async () => {
         
-        const pannelComponent = render(<PanelButtons
+     
+
+        let pannelComponentb = render(<PanelButtons
             showLegendbar={false}
             setShowLegendbar={jest.fn()}
             showListTabs={true}
@@ -60,12 +65,13 @@ describe('PanelButtons', () => {
             leftPanelSize={20}
             setLeftPanelSize={ jest.fn()} />);
 
-        await waitFor(() => expect(pannelComponent.getByTitle(shrinkLabel)));
 
-        const shrinkButton = pannelComponent.getByTitle(shrinkLabel);
+        await waitFor(() => expect(pannelComponentb.getByTitle(shrinkLabel).tobeinTheDocument));
+
+        const shrinkButton = pannelComponentb.getByTitle(shrinkLabel);
         expect(shrinkButton).toHaveAttribute("disabled")
-        const expandButton = pannelComponent.getByTitle(expandLabel);
+        const expandButton = pannelComponentb.getByTitle(expandLabel);
         expect(expandButton).toHaveAttribute("disabled")
     });
-
 });
+