diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 93dcf21c4426..814b9b84375b 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -52,6 +52,9 @@ Other Changes:
   area (e.g. when window is collapsed + moved in a corner) to facilitate moving the window away. (#3825)
 - Window, Nav: Fixed crash when calling SetWindowFocus(NULL) as the time a new window appears. (#3865) [@nem0]
 - Tables: Fixed unaligned accesses when using TableSetBgColor(ImGuiTableBgTarget_CellBg). (#3872)
+- IsItemHovered(): fixed return value false positive when used after EndChild(), EndGroup() or widgets using
+  either of them, when the hovered location is located within a child window, e.g. InputTextMultiline().
+  This is intended to have no side effects, but brace yourself for the possible comeback.. (#3851, #1370)
 - Added GetAllocatorFunctions() to facilitate sharing allocators accross DLL boundaries. (#3836)
 - ImFontAtlas: Added 'bool TexPixelsUseColors' output to help backend decide of underlying texture format. (#3369)
   This can currently only ever be set by the Freetype renderer.
diff --git a/imgui.cpp b/imgui.cpp
index 862bcb28e363..05281dbd7d3d 100644
--- a/imgui.cpp
+++ b/imgui.cpp
@@ -3122,20 +3122,22 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
         return IsItemFocused();
 
     // Test for bounding box overlap, as updated as ItemAdd()
-    if (!(window->DC.LastItemStatusFlags & ImGuiItemStatusFlags_HoveredRect))
+    ImGuiItemStatusFlags status_flags = window->DC.LastItemStatusFlags;
+    if (!(status_flags & ImGuiItemStatusFlags_HoveredRect))
         return false;
     IM_ASSERT((flags & (ImGuiHoveredFlags_RootWindow | ImGuiHoveredFlags_ChildWindows)) == 0);   // Flags not supported by this function
 
     // Test if we are hovering the right window (our window could be behind another window)
-    // [2017/10/16] Reverted commit 344d48be3 and testing RootWindow instead. I believe it is correct to NOT test for RootWindow but this leaves us unable to use IsItemHovered() after EndChild() itself.
-    // Until a solution is found I believe reverting to the test from 2017/09/27 is safe since this was the test that has been running for a long while.
-    //if (g.HoveredWindow != window)
-    //    return false;
-    if (g.HoveredRootWindow != window->RootWindow && !(flags & ImGuiHoveredFlags_AllowWhenOverlapped))
-        return false;
+    // [2021/03/02] Reworked / reverted the revert, finally. Note we want e.g. BeginGroup/ItemAdd/EndGroup to work as well. (#3851)
+    // [2017/10/16] Reverted commit 344d48be3 and testing RootWindow instead. I believe it is correct to NOT test for RootWindow but this leaves us unable
+    // to use IsItemHovered() after EndChild() itself. Until a solution is found I believe reverting to the test from 2017/09/27 is safe since this was
+    // the test that has been running for a long while.
+    if (g.HoveredWindow != window && (status_flags & ImGuiItemStatusFlags_HoveredWindow) == 0)
+        if ((flags & ImGuiHoveredFlags_AllowWhenOverlapped) == 0)
+            return false;
 
     // Test if another item is active (e.g. being dragged)
-    if (!(flags & ImGuiHoveredFlags_AllowWhenBlockedByActiveItem))
+    if ((flags & ImGuiHoveredFlags_AllowWhenBlockedByActiveItem) == 0)
         if (g.ActiveId != 0 && g.ActiveId != window->DC.LastItemId && !g.ActiveIdAllowOverlap && g.ActiveId != window->MoveId)
             return false;
 
@@ -5014,6 +5016,8 @@ void ImGui::EndChild()
             // Not navigable into
             ItemAdd(bb, 0);
         }
+        if (g.HoveredWindow == window)
+            parent_window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HoveredWindow;
     }
     g.WithinEndChild = false;
     g.LogLinePosY = -FLT_MAX; // To enforce a carriage return
@@ -7647,6 +7651,7 @@ void ImGui::BeginGroup()
     group_data.BackupCurrLineSize = window->DC.CurrLineSize;
     group_data.BackupCurrLineTextBaseOffset = window->DC.CurrLineTextBaseOffset;
     group_data.BackupActiveIdIsAlive = g.ActiveIdIsAlive;
+    group_data.BackupHoveredIdIsAlive = g.HoveredId != 0;
     group_data.BackupActiveIdPreviousFrameIsAlive = g.ActiveIdPreviousFrameIsAlive;
     group_data.EmitItem = true;
 
@@ -7700,6 +7705,11 @@ void ImGui::EndGroup()
         window->DC.LastItemId = g.ActiveIdPreviousFrame;
     window->DC.LastItemRect = group_bb;
 
+    // Forward Hovered flag
+    const bool group_contains_curr_hovered_id = (group_data.BackupHoveredIdIsAlive == false) && g.HoveredId != 0;
+    if (group_contains_curr_hovered_id)
+        window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_HoveredWindow;
+
     // Forward Edited flag
     if (group_contains_curr_active_id && g.ActiveIdHasBeenEditedThisFrame)
         window->DC.LastItemStatusFlags |= ImGuiItemStatusFlags_Edited;
diff --git a/imgui_internal.h b/imgui_internal.h
index 9157a9d8e132..dcb90988e430 100644
--- a/imgui_internal.h
+++ b/imgui_internal.h
@@ -697,12 +697,13 @@ enum ImGuiItemStatusFlags_
 {
     ImGuiItemStatusFlags_None               = 0,
     ImGuiItemStatusFlags_HoveredRect        = 1 << 0,
-    ImGuiItemStatusFlags_HasDisplayRect     = 1 << 1,
+    ImGuiItemStatusFlags_HasDisplayRect     = 1 << 1,   // LastItemDisplayRect is valid
     ImGuiItemStatusFlags_Edited             = 1 << 2,   // Value exposed by item was edited in the current frame (should match the bool return value of most widgets)
     ImGuiItemStatusFlags_ToggledSelection   = 1 << 3,   // Set when Selectable(), TreeNode() reports toggling a selection. We can't report "Selected" because reporting the change allows us to handle clipping with less issues.
     ImGuiItemStatusFlags_ToggledOpen        = 1 << 4,   // Set when TreeNode() reports toggling their open state.
     ImGuiItemStatusFlags_HasDeactivated     = 1 << 5,   // Set if the widget/group is able to provide data for the ImGuiItemStatusFlags_Deactivated flag.
-    ImGuiItemStatusFlags_Deactivated        = 1 << 6    // Only valid if ImGuiItemStatusFlags_HasDeactivated is set.
+    ImGuiItemStatusFlags_Deactivated        = 1 << 6,   // Only valid if ImGuiItemStatusFlags_HasDeactivated is set.
+    ImGuiItemStatusFlags_HoveredWindow      = 1 << 7    // Override the HoveredWindow test to allow cross-window hover testing.
 
 #ifdef IMGUI_ENABLE_TEST_ENGINE
     , // [imgui_tests only]
@@ -924,7 +925,7 @@ struct ImGuiStyleMod
 };
 
 // Stacked storage data for BeginGroup()/EndGroup()
-struct ImGuiGroupData
+struct IMGUI_API ImGuiGroupData
 {
     ImGuiID     WindowID;
     ImVec2      BackupCursorPos;
@@ -935,6 +936,7 @@ struct ImGuiGroupData
     float       BackupCurrLineTextBaseOffset;
     ImGuiID     BackupActiveIdIsAlive;
     bool        BackupActiveIdPreviousFrameIsAlive;
+    bool        BackupHoveredIdIsAlive;
     bool        EmitItem;
 };