Forum Panel: Do not collapse Chat Folders

src/components/left/main/LeftMain.scss

@@ -17,14 +17,6 @@
     flex-direction: column;
     overflow: hidden;
 
-    transition: transform 250ms ease; // Same as Forum Panel
-
-    &--tabs-hidden {
-      transform: translateY(-3.125rem);
-
-      height: calc(100% + 3.125rem);
-    }
-
     .tabs-placeholder {
       height: 2.625rem;
       /* stylelint-disable-next-line plugin/no-low-performance-animation-properties */
@@ -41,6 +33,14 @@
       padding-bottom: 1px;
       border-bottom: 0;
       z-index: 1;
+
+      opacity: 1;
+      transition: opacity 250ms ease; // Same as Forum Panel
+    }
+
+    &--tabs-hidden .TabList {
+      pointer-events: none;
+      opacity: 0.25;
     }
 
     .Tab {