Odd code appearing in all editable content in the HTML editor

[Dan_Stevens_]

Recently, my team's been noticing the highlighted code contained within the HTML of all editable content in Marketo (when using Firefox/Windows):

<object style="display: none;" id="__symantecPKIClientMessenger" data-install-updates-user-configuration="true" data-supports-flavor-configuration="true" data-extension-version="0.5.0.161"></object>

It doesn't exist within our templates and just automatically gets appended within the HTML at the end of the every content block when editing text.  Are others experiencing this?  I need to determine if this is something unique on our end or more widespread in Marketo.

[Josh_Hill13]

No idea.

Philip DeVera​ ?

[Dan_Stevens_ · Accepted solution]

I found this extension installed - and therefore causing this issue.  I went ahead and disabled it, which fixed it.