Resetting the opening tab marker

display/overlays/neighbors.js

@@ -94,6 +94,7 @@ class NodeNeighborOverlay {
                 collTab
             );
             openMarkerTabs.innerText = '+';
+            collTab.marker = openMarkerTabs;
 
             // Content of the different tabs
             const collTabContent = Helpers.createDiv(
@@ -172,6 +173,7 @@ class NodeNeighborOverlay {
                 this.tabNavHandles[page.type].style.display = "none";
             } else {
                 this.tabNavHandles[page.type].style.display = "flex";
+                this.tabNavHandles[page.type].marker.innerText = '+';
             }
         }
     }