diff --git a/ts/a11y/explorer/ExplorerPool.ts b/ts/a11y/explorer/ExplorerPool.ts
index f74d85b93..f497f1575 100644
--- a/ts/a11y/explorer/ExplorerPool.ts
+++ b/ts/a11y/explorer/ExplorerPool.ts
@@ -170,8 +170,8 @@ const allExplorers: { [options: string]: ExplorerInit } = {
       pool,
       doc.explorerRegions.tooltip3,
       node,
-      (x: HTMLElement) => x.hasAttribute('data-semantic-prefix'),
-      (x: HTMLElement) => x.getAttribute('data-semantic-prefix')
+      (x: HTMLElement) => x.hasAttribute?.('data-semantic-prefix-none'),
+      (x: HTMLElement) => x.getAttribute?.('data-semantic-prefix-none')
     ),
   flame: (
     doc: ExplorerMathDocument,
diff --git a/ts/a11y/explorer/Region.ts b/ts/a11y/explorer/Region.ts
index a4cdefa06..7e4dc6fd6 100644
--- a/ts/a11y/explorer/Region.ts
+++ b/ts/a11y/explorer/Region.ts
@@ -323,7 +323,7 @@ export class ToolTip extends StringRegion {
       height: 'auto',
       opacity: 1,
       'text-align': 'center',
-      'border-radius': '6px',
+      'border-radius': '4px',
       padding: 0,
       'border-bottom': '1px dotted black',
       position: 'absolute',
@@ -331,6 +331,10 @@ export class ToolTip extends StringRegion {
       'background-color': 'white',
       'z-index': 202,
     },
+    ['.' + ToolTip.className + ' > div']: {
+      'border-radius': 'inherit',
+      padding: '0 2px',
+    },
   });
 }
 
diff --git a/ts/ui/menu/Menu.ts b/ts/ui/menu/Menu.ts
index 73057eb49..ca07756d2 100644
--- a/ts/ui/menu/Menu.ts
+++ b/ts/ui/menu/Menu.ts
@@ -823,16 +823,11 @@ export class Menu {
               ['500%'],
             ]),
           ]),
-          this.submenu(
-            'Semantic Info',
-            'Semantic Info',
-            [
-              this.checkbox('Type', 'Type', 'infoType'),
-              this.checkbox('Role', 'Role', 'infoRole'),
-              this.checkbox('Prefix', 'Prefix', 'infoPrefix'),
-            ],
-            true
-          ),
+          this.submenu('Semantic Info', 'Semantic Info', [
+            this.checkbox('Type', 'Type', 'infoType'),
+            this.checkbox('Role', 'Role', 'infoRole'),
+            this.checkbox('Prefix', 'Prefix', 'infoPrefix'),
+          ]),
           this.rule(),
           this.submenu('Role Description', 'Describe math as', [
             this.radioGroup('roleDescription', [