InputText: Fixed returning true when edition is cancelled with Esc and the current buffer matches the initial value.

CHANGELOG.txt

@@ -56,6 +56,7 @@ Other Changes:
 - MenuBar: Made BeginMainMenuBar() honor style.DisplaySafeAreaPadding so the text can be made visible on TV settings that don't display all pixels. (#1439) [@dougbinks]
 - InputText: On Mac OS X, filter out characters when the Cmd modifier is held. (#1747) [@sivu]
 - InputText: On Mac OS X, support Cmd+Shift+Z for Redo. Cmd+Y is also supported as major apps seems to default to support both. (#1765) [@lfnoise]
+- InputText: Fixed returning true when edition is cancelled with Esc and the current buffer matches the initial value.
 - Style: Changed default style.DisplaySafeAreaPadding values from (4,4) to (3,3) so it is smaller than FramePadding and has no effect on main menu bar on a computer. (#1439)
 - Misc: Added IMGUI_CHECKVERSION() macro to compare version string and data structure sizes in order to catch issues with mismatching compilation unit settings. (#1695, #1769)
 - Demo: Fixed Overlay: Added a context menu item to enable freely moving the window. 

imgui.cpp

@@ -10245,8 +10245,8 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
     {
         if (cancel_edit)
         {
-            // Restore initial value
-            if (is_editable)
+            // Restore initial value. Only return true if restoring to the initial value changes the current buffer contents.
+            if (is_editable && strncmp(buf, edit_state.InitialText.Data, buf_size) != 0)
             {
                 ImStrncpy(buf, edit_state.InitialText.Data, buf_size);
                 value_changed = true;