fix unscrollable description

src/assets/css/editor-panel.css

@@ -2,7 +2,8 @@
   padding: 12px;
   max-width: 400px;
   box-shadow: 0 0 2px 2px var(--color-neutral-600);
-  height: 100%;
+  max-height: calc(100% - 5rem);
+  overflow-y: auto;
 }
 .editor-panel.planning {
   height: auto;