diff --git a/src/buffer/out/textBuffer.cpp b/src/buffer/out/textBuffer.cpp
index 794761c5c8f..8698980ae45 100644
--- a/src/buffer/out/textBuffer.cpp
+++ b/src/buffer/out/textBuffer.cpp
@@ -1118,6 +1118,14 @@ void TextBuffer::TriggerNewTextNotification(const std::wstring_view newText)
     }
 }
 
+void TextBuffer::TriggerSelection()
+{
+    if (_isActiveBuffer && _renderer)
+    {
+        _renderer->TriggerSelection();
+    }
+}
+
 // Method Description:
 // - get delimiter class for buffer cell position
 // - used for double click selection and uia word navigation
diff --git a/src/buffer/out/textBuffer.hpp b/src/buffer/out/textBuffer.hpp
index 22dc8b80ffd..3425ea6fbf2 100644
--- a/src/buffer/out/textBuffer.hpp
+++ b/src/buffer/out/textBuffer.hpp
@@ -170,6 +170,7 @@ class TextBuffer final
     void TriggerScroll();
     void TriggerScroll(const til::point delta);
     void TriggerNewTextNotification(const std::wstring_view newText);
+    void TriggerSelection();
 
     til::point GetWordStart(const til::point target, const std::wstring_view wordDelimiters, bool accessibilityMode = false, std::optional<til::point> limitOptional = std::nullopt) const;
     til::point GetWordEnd(const til::point target, const std::wstring_view wordDelimiters, bool accessibilityMode = false, std::optional<til::point> limitOptional = std::nullopt) const;
diff --git a/src/cascadia/TerminalControl/ControlCore.cpp b/src/cascadia/TerminalControl/ControlCore.cpp
index ce89c251496..caa45430617 100644
--- a/src/cascadia/TerminalControl/ControlCore.cpp
+++ b/src/cascadia/TerminalControl/ControlCore.cpp
@@ -2716,7 +2716,6 @@ namespace winrt::Microsoft::Terminal::Control::implementation
         bufferSize.DecrementInBounds(inclusiveEnd);
 
         _terminal->SelectNewRegion(s.start, inclusiveEnd);
-        _renderer->TriggerSelection();
     }
 
     void ControlCore::SelectCommand(const bool goUp)
diff --git a/src/cascadia/TerminalCore/TerminalSelection.cpp b/src/cascadia/TerminalCore/TerminalSelection.cpp
index 5a5bfce7f9a..70d0b7ca08b 100644
--- a/src/cascadia/TerminalCore/TerminalSelection.cpp
+++ b/src/cascadia/TerminalCore/TerminalSelection.cpp
@@ -174,7 +174,6 @@ void Terminal::MultiClickSelection(const til::point viewportPos, SelectionExpans
     selection->pivot = _ConvertToBufferCell(viewportPos, true);
     selection->active = true;
 
-    // TODO CARLOS: validate
     _multiClickSelectionMode = expansionMode;
     SetSelectionEnd(viewportPos);
 
@@ -197,7 +196,6 @@ void Terminal::SetSelectionAnchor(const til::point viewportPos)
     selection->pivot = _ConvertToBufferCell(viewportPos, true);
     selection->active = true;
 
-    // TODO CARLOS: validate
     _multiClickSelectionMode = SelectionExpansion::Char;
     SetSelectionEnd(viewportPos);
 
@@ -916,7 +914,6 @@ Terminal::TextCopyData Terminal::RetrieveSelectedTextFromBuffer(const bool singl
 // - the corresponding location on the buffer
 til::point Terminal::_ConvertToBufferCell(const til::point viewportPos, bool allowRightExclusive) const
 {
-    // TODO CARLOS: this is a dangerous change. Validate side-effects!
     const auto yPos = _VisibleStartIndex() + viewportPos.y;
     til::point bufferPos = { viewportPos.x, yPos };
     const auto bufferSize = _activeBuffer().GetSize();
diff --git a/src/cascadia/TerminalCore/terminalrenderdata.cpp b/src/cascadia/TerminalCore/terminalrenderdata.cpp
index 006d87aabe5..c381d478451 100644
--- a/src/cascadia/TerminalCore/terminalrenderdata.cpp
+++ b/src/cascadia/TerminalCore/terminalrenderdata.cpp
@@ -210,6 +210,7 @@ void Terminal::SelectNewRegion(const til::point coordStart, const til::point coo
     const auto newCoordEnd = til::point{ coordEnd.x, coordEnd.y - newScrollOffset };
     SetSelectionAnchor(newCoordStart);
     SetSelectionEnd(newCoordEnd, SelectionExpansion::Char);
+    _activeBuffer().TriggerSelection();
 }
 
 const std::wstring_view Terminal::GetConsoleTitle() const noexcept
diff --git a/src/types/TermControlUiaProvider.cpp b/src/types/TermControlUiaProvider.cpp
index 3cfc041f5da..caf842ad9b3 100644
--- a/src/types/TermControlUiaProvider.cpp
+++ b/src/types/TermControlUiaProvider.cpp
@@ -160,14 +160,8 @@ HRESULT TermControlUiaProvider::GetSelectionRange(_In_ IRawElementProviderSimple
     RETURN_HR_IF_NULL(E_INVALIDARG, ppUtr);
     *ppUtr = nullptr;
 
-    const auto start = _pData->GetSelectionAnchor();
-
-    // we need to make end exclusive
-    auto end = _pData->GetSelectionEnd();
-    _pData->GetTextBuffer().GetSize().IncrementInBounds(end, true);
-
     TermControlUiaTextRange* result = nullptr;
-    RETURN_IF_FAILED(MakeAndInitialize<TermControlUiaTextRange>(&result, _pData, pProvider, start, end, _pData->IsBlockSelection(), wordDelimiters));
+    RETURN_IF_FAILED(MakeAndInitialize<TermControlUiaTextRange>(&result, _pData, pProvider, _pData->GetSelectionAnchor(), _pData->GetSelectionEnd(), _pData->IsBlockSelection(), wordDelimiters));
     *ppUtr = result;
     return S_OK;
 }
diff --git a/src/types/UiaTextRangeBase.cpp b/src/types/UiaTextRangeBase.cpp
index 0ce958e6985..857cf32c71e 100644
--- a/src/types/UiaTextRangeBase.cpp
+++ b/src/types/UiaTextRangeBase.cpp
@@ -987,13 +987,9 @@ std::wstring UiaTextRangeBase::_getTextValue(til::CoordType maxLength) const
 
         // TODO GH#5406: create a different UIA parent object for each TextBuffer
         // nvaccess/nvda#11428: Ensure our endpoints are in bounds
-        THROW_HR_IF(E_FAIL, !bufferSize.IsInBounds(_start, true) || !bufferSize.IsInBounds(_end, true));
+        THROW_HR_IF(E_FAIL, !bufferSize.IsInExclusiveBounds(_start) || !bufferSize.IsInExclusiveBounds(_end));
 
-        // convert _end to be inclusive
-        auto inclusiveEnd = _end;
-        bufferSize.DecrementInBounds(inclusiveEnd, true);
-
-        const auto req = TextBuffer::CopyRequest{ buffer, _start, inclusiveEnd, _blockRange, true, false, false, true };
+        const auto req = TextBuffer::CopyRequest{ buffer, _start, _end, _blockRange, true, false, false, true };
         auto plainText = buffer.GetPlainText(req);
 
         if (plainText.size() > maxLengthAsSize)