diff --git a/IPython/core/prompts.py b/IPython/core/prompts.py
index 0f42557..bd1dd88 100644
--- a/IPython/core/prompts.py
+++ b/IPython/core/prompts.py
@@ -403,10 +403,10 @@ class PromptManager(Configurable):
 
         # Handle justification of prompt
         invis_chars = self.invisible_chars[name] if color else 0
-        self.txtwidth = _lenlastline(res) - invis_chars
+        # self.txtwidth = _lenlastline(res) - invis_chars
         just = self.justify if (just is None) else just
         # If the prompt spans more than one line, don't try to justify it:
         if just and name != 'in' and ('\n' not in res) and ('\r' not in res):
             res = res.rjust(self.width + invis_chars)
-        self.width = _lenlastline(res) - invis_chars
+        # self.width = _lenlastline(res) - invis_chars
         return res