Spell Check Icon Disappeared yesterday for Agent Comments

Spell Check Icon Disappeared yesterday for Agent Comments

We always use "Public Comment" when communicating on tickets with our customers. For years we had the "Spell Check" icon when typing a comment. Yesterday, this icon disappeared for comments and is only avaialable when drafting a response via "Reply." Can you please add the "Spell Check" icon back for comments?? 
Here is the spell check icon if using reply opytion on ticket:


below is comment box for our agents. Yesterday the "Spell Check" option disappeared:


Please fix this.