InputText: Fixed an edge case crash that would happen if another widget sharing the same ID is being swapped with an InputText that has yet to be activated.

docs/CHANGELOG.txt

@@ -38,6 +38,8 @@ Other Changes:
 - InputInt, InputFloat, InputScalar: Fix to keep the label of the +/- buttons centered when
   style.FramePadding.x is abnormally larger than style.FramePadding.y. Since the buttons are
   meant to be square (to align with e.g. color button) we always use FramePadding.y. (#2367)
+- InputText: Fixed an edge case crash that would happen if another widget sharing the same ID
+  is being swapped with an InputText that has yet to be activated.
 - Examples: OpenGL: Fix for OSX not supporting OpenGL 4.5, we don't try to read GL_CLIP_ORIGIN
   even if the OpenGL headers/loader happens to define the value. (#2366, #2186)
 

imgui_widgets.cpp

@@ -3278,6 +3278,10 @@ bool ImGui::InputTextEx(const char* label, char* buf, int buf_size, const ImVec2
         clear_active_id = true;
     }
 
+    // We have an edge case if ActiveId was set through another widget (e.g. widget being swapped)
+    if (g.ActiveId == id && state == NULL)
+        ClearActiveID();
+
     bool value_changed = false;
     bool enter_pressed = false;
     int backup_current_text_length = 0;