Placeholder text doesn’t disappear

The placeholder text in our comment box says “COMMENT” and it used to be wiped out when users clicked in the comment box to type. However, the other day this placeholder text stopped disappearing.

We’re getting a lot of comments like, “CThank you!OMMENT” now’.

With this plugin disabled, the placeholder text disappears when you click in the box. Re-enable this plugin, placeholder text doesn’t disappear… It’s driving me nuts.

Is there a way to resolve this issue?

Thank you!