strange change of the indention to 3 spaces

[metulburr]

all originally 3 spaced. Seeing if this happens after removing WYSIWYG editor

NO TAGS showing in preview no indentation whatsoever
def foo():
"""This is just some dummy code"""
 
  a=0
  for n in range(10):
      a+=n
  return a
PYTHON TAGS showing in preview 3 spaces

def foo():
"""This is just some dummy code"""
  
  a=0
  for n in range(10):
      a+=n
  return a

CODE TAGS showing in preview 3 spaces

def foo():
"""This is just some dummy code"""
   
   a=0
   for n in range(10):
       a+=n
   return a