Add Wall of Browser Bugs entry for #16671

Closes #16671
[skip sauce]

docs/_data/browser-bugs.yml

@@ -18,6 +18,16 @@
   origin: >
     Bootstrap#14528
 
+-
+  browser: >
+    Internet Explorer 11
+  summary: >
+    CSS `border-radius` sometimes causes lines of bleed-through of the `background-color` of the parent element.
+  upstream_bug: >
+    IE#1463734
+  origin: >
+    Bootstrap#16671
+
 -
   browser: >
     Firefox