From d4b71463cbc37e01c1f8964f56e2067624defb3e Mon Sep 17 00:00:00 2001
From: Philipp Rudiger <prudiger@anaconda.com>
Date: Mon, 6 Dec 2021 17:26:44 +0100
Subject: [PATCH] Ensure empty Str has same height as non-empty

---
 panel/pane/markup.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/panel/pane/markup.py b/panel/pane/markup.py
index 78880b9029..eb3ba8dee9 100644
--- a/panel/pane/markup.py
+++ b/panel/pane/markup.py
@@ -247,8 +247,8 @@ def applies(cls, obj):
 
     def _get_properties(self):
         properties = super()._get_properties()
-        if self.object is None:
-            text = ''
+        if self.object is None or (isinstance(self.object, str) and self.object == ''):
+            text = '<pre> </pre>'
         else:
             text = '<pre>'+str(self.object)+'</pre>'
         return dict(properties, text=escape(text))