[jcsiracusa]

Click the “Aa” icon in the WYSIWYG text input area toolbar to go back to the old non-WYSIWYG text input field.

[Kalium]

I'm sorry to say, but this is incorrect. Clicking that button hides the strip of formatting buttons, but does not return to the old text input behavior.

[jsjohnst]

EXACTLY! If hiding it restored the old behavior, almost nobody would be complaining.