I am a touch typist who uses Mathematics Stack Exchange site mostly and would like to know if there exists a way to type a question/answer on any Stack Exchange site with all the necessary formatting without the page automatically scrolling back up to where you input the math code?
There must be a way to dis-engage this annoying auto-scroll feature so that I can only see the rendered output as I type.
This is the simplest way I can think to word this question; if it is unclear to anyone what I’m asking then please let me know and I will elaborate.
Here is a userscript that I found in StackApps which was created partly by Antonio Vargas that enables side-by-side editing. This userscript adds a button to the editor toolbar ('Toggle Side-By-Side Editing') shown in the blue box in the image below so you can view the preview and markdown side by side when asking or answering a question or when editing an existing question or answer. You can also hide the preview as shown in the orange box.
To get this script first install Greasemonkey if you are using Firefox or Tampermonkey if using Chrome, and then click here.
Here is another solution that has been brought to my attention recently: Use Stackedit and this allows you to see the rendered output and the text input simultaneously. Furthermore, you can minimize the text input box to such an extent that it barely is visible at all.