When trying to create a new section on a blank talk page an API error is thrown. - an edit conflict ({"servedby":"mw1017","error":{"code":"editconflict","info":"Edit conflict detected"}}")
These are some sample parameters
format:json
action:edit
section:new
sectiontitle:zz
title:Talk:Mobile.js
token:f2792a66d75d945685c1d20dbc49c76d+\
summary:New talk section: zz
text:zz ~~~~
Might be an API bug?
Version: unspecified
Severity: normal