@onehundred80 I looked into your Signature issue and have found the following:

1) Looking at your signature field, which I've attached below, you will see the start of your Signature has 4 color codes selected and 4 size codes selected. As you probably know, you cannot do that with HTML. You can only "specify" one size and color at one time. The layers of color and sizes in a row could have been added by a software bug or during an update of your signature.

2) The size HTML isn't fully supported. That's why the size option is not available on the editor toolbar. It's not fully supported because the developers found that it didn't scale well across devices. With the increasing amount of mobile and different ways to access and use forums, this was a concern. If you entered in the size manually it executes but it does appear to break the editor. That's the real issue as to why you see a blank editor window. The size tags are breaking the function as it cannot display in the What You See Is What You Get Editor.

On Monday I'll ask the team about the size tag to see what is planned.