Add Wall of Browser Bugs entry for #15298

[skip sauce]

docs/_data/browser-bugs.yml

@@ -108,6 +108,16 @@
   origin: >
     Bootstrap#14409
 
+-
+  browser: >
+    Chrome (Windows)
+  summary: >
+    Animation glitch when returning to inactive tab after animations occurred while tab was hidden.
+  upstream_bug: >
+    Chromium#449180
+  origin: >
+    Bootstrap#15298
+
 -
   browser: >
     Safari (OS X)