User Configuration > Administrative Templates > Microsoft Word 2016 > Word Options > Proofing > AutoFormat as you type > Replace as you type
User
HKCU\software\policies\microsoft\office\16.0\word\options\assist
Checks/unchecks the option "Spaces at beginning of paragraph with first-line indent" in the group "Replace as you type." This option may be hidden in Word until certain editing languages are enabled.