diff --git a/Lib/idlelib/config_key.py b/Lib/idlelib/config_key.py
index 7f4bb49ec8a..abab74265f3 100644
--- a/Lib/idlelib/config_key.py
+++ b/Lib/idlelib/config_key.py
@@ -235,10 +235,12 @@ def OK(self, event=None):
             return
         if (self.advanced or self.KeysOK(keys)) and self.bind_ok(keys):
             self.result = keys
+        self.grab_release()
         self.destroy()
 
     def Cancel(self, event=None):
         self.result=''
+        self.grab_release()
         self.destroy()
 
     def KeysOK(self, keys):
diff --git a/Lib/idlelib/configdialog.py b/Lib/idlelib/configdialog.py
index c7832380940..e682ec0da32 100644
--- a/Lib/idlelib/configdialog.py
+++ b/Lib/idlelib/configdialog.py
@@ -191,6 +191,7 @@ def cancel(self):
     def destroy(self):
         global font_sample_text
         font_sample_text = self.fontpage.font_sample.get('1.0', 'end')
+        self.grab_release()
         super().destroy()
 
     def help(self):
diff --git a/Lib/idlelib/help_about.py b/Lib/idlelib/help_about.py
index 2a274a93048..64b13ac2abb 100644
--- a/Lib/idlelib/help_about.py
+++ b/Lib/idlelib/help_about.py
@@ -195,6 +195,7 @@ def display_file_text(self, title, filename, encoding=None):
 
     def ok(self, event=None):
         "Dismiss help_about dialog."
+        self.grab_release()
         self.destroy()
 
 
diff --git a/Lib/idlelib/query.py b/Lib/idlelib/query.py
index 15add6d1274..c2628cceb73 100644
--- a/Lib/idlelib/query.py
+++ b/Lib/idlelib/query.py
@@ -143,6 +143,10 @@ def cancel(self, event=None):  # Do not replace.
         self.result = None
         self.destroy()
 
+    def destroy(self):
+        self.grab_release()
+        super().destroy()
+
 
 class SectionName(Query):
     "Get a name for a config file section name."
diff --git a/Lib/idlelib/textview.py b/Lib/idlelib/textview.py
index d9260e6c718..e78e297ab99 100644
--- a/Lib/idlelib/textview.py
+++ b/Lib/idlelib/textview.py
@@ -91,6 +91,7 @@ def __init__(self, parent, title, text, modal=True,
 
     def ok(self, event=None):
         """Dismiss text viewer dialog."""
+        self.grab_release()
         self.destroy()
 
 
diff --git a/Misc/NEWS.d/next/IDLE/2018-08-01-23-25-38.bpo-34120.HgsIz-.rst b/Misc/NEWS.d/next/IDLE/2018-08-01-23-25-38.bpo-34120.HgsIz-.rst
new file mode 100644
index 00000000000..f9954f7c1af
--- /dev/null
+++ b/Misc/NEWS.d/next/IDLE/2018-08-01-23-25-38.bpo-34120.HgsIz-.rst
@@ -0,0 +1 @@
+Fix unresponsiveness after closing certain windows and dialogs.
\ No newline at end of file