Try scrolling to the task on jump.

Telegram/SourceFiles/history/history_widget.cpp

@@ -1498,12 +1498,21 @@ int HistoryWidget::itemTopForHighlight(
 	const auto heightLeft = (visibleAreaHeight - viewHeight);
 	if (heightLeft >= 0) {
 		return std::max(itemTop - (heightLeft / 2), 0);
-	} else if (const auto sel = itemHighlight(item).range
+	} else if (const auto highlight = itemHighlight(item)
-		; !sel.empty() && !IsSubGroupSelection(sel)) {
+		; (!highlight.range.empty() || highlight.todoItemId)
+			&& !IsSubGroupSelection(highlight.range)) {
+		const auto sel = highlight.range;
 		const auto single = st::messageTextStyle.font->height;
-		const auto begin = HistoryView::FindViewY(view, sel.from) - single;
+		const auto todoy = sel.empty()
-		const auto end = HistoryView::FindViewY(view, sel.to, begin + single)
+			? HistoryView::FindViewTaskY(view, highlight.todoItemId)
-			+ 2 * single;
+			: 0;
+		const auto begin = sel.empty()
+			? (todoy - 4 * single)
+			: HistoryView::FindViewY(view, sel.from) - single;
+		const auto end = sel.empty()
+			? (todoy + 4 * single)
+			: (HistoryView::FindViewY(view, sel.to, begin + single)
+				+ 2 * single);
 		auto result = itemTop;
 		if (end > visibleAreaHeight) {
 			result = std::max(result, itemTop + end - visibleAreaHeight);

Telegram/SourceFiles/history/view/history_view_element.cpp

@@ -46,6 +46,7 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 #include "data/data_channel.h"
 #include "data/data_saved_sublist.h"
 #include "data/data_session.h"
+#include "data/data_todo_list.h"
 #include "data/data_forum.h"
 #include "data/data_forum_topic.h"
 #include "data/data_message_reactions.h"
@@ -2455,6 +2456,70 @@ int FindViewY(not_null<Element*> view, uint16 symbol, int yfrom) {
 	return origin.y() + (yfrom + ytill) / 2;
 }
 
+int FindViewTaskY(not_null<Element*> view, int taskId, int yfrom) {
+	auto request = HistoryView::StateRequest();
+	request.flags = Ui::Text::StateRequest::Flag::LookupLink;
+	const auto single = st::messageTextStyle.font->height;
+	const auto inner = view->innerGeometry();
+	const auto origin = inner.topLeft();
+	const auto top = 0;
+	const auto bottom = view->height();
+	if (origin.y() < top
+		|| origin.y() + inner.height() > bottom
+		|| inner.height() <= 0) {
+		return yfrom;
+	}
+	const auto media = view->data()->media();
+	const auto todolist = media ? media->todolist() : nullptr;
+	if (!todolist) {
+		return yfrom;
+	}
+	const auto &items = todolist->items;
+	const auto indexOf = [&](int id) -> int {
+		return ranges::find(items, id, &TodoListItem::id) - begin(items);
+	};
+	const auto index = indexOf(taskId);
+	const auto count = int(items.size());
+	if (index == count) {
+		return yfrom;
+	}
+	yfrom = std::max(yfrom - origin.y(), 0);
+	auto ytill = inner.height() - 1;
+	const auto middle = (yfrom + ytill) / 2;
+	const auto fory = [&](int y) {
+		const auto state = view->textState(origin + QPoint(0, y), request);
+		const auto &link = state.link;
+		const auto id = link
+			? link->property(kTodoListItemIdProperty).toInt()
+			: -1;
+		const auto index = (id >= 0) ? indexOf(id) : int(items.size());
+		return (index < count) ? index : (y < middle) ? -1 : count;
+	};
+	auto indexfrom = fory(yfrom);
+	auto indextill = fory(ytill);
+	if ((yfrom >= ytill) || (indexfrom >= index)) {
+		return origin.y() + yfrom;
+	} else if (indextill <= index) {
+		return origin.y() + ytill;
+	}
+	while (ytill - yfrom >= 2 * single) {
+		const auto middle = (yfrom + ytill) / 2;
+		const auto found = fory(middle);
+		if (found == index
+			|| indexfrom > found
+			|| indextill < found) {
+			return origin.y() + middle;
+		} else if (found < index) {
+			yfrom = middle;
+			indexfrom = found;
+		} else {
+			ytill = middle;
+			indextill = found;
+		}
+	}
+	return origin.y() + (yfrom + ytill) / 2;
+}
+
 Window::SessionController *ExtractController(const ClickContext &context) {
 	const auto my = context.other.value<ClickHandlerContext>();
 	if (const auto controller = my.sessionWindow.get()) {

Telegram/SourceFiles/history/view/history_view_element.h

@@ -747,6 +747,11 @@ private:
 	uint16 symbol,
 	int yfrom = 0);
 
+[[nodiscard]] int FindViewTaskY(
+	not_null<Element*> view,
+	int taskId,
+	int yfrom = 0);
+
 [[nodiscard]] Window::SessionController *ExtractController(
 	const ClickContext &context);
 

Telegram/SourceFiles/history/view/history_view_list_widget.cpp

@@ -716,12 +716,21 @@ std::optional<int> ListWidget::scrollTopForView(
 	const auto heightLeft = (available - height);
 	if (heightLeft >= 0) {
 		return std::max(top - (heightLeft / 2), 0);
-	} else if (const auto sel = _highlighter.state(view->data()).range
+	} else if (const auto highlight = _highlighter.state(view->data())
-		; !sel.empty() && !IsSubGroupSelection(sel)) {
+		; (!highlight.range.empty() || highlight.todoItemId)
+		&& !IsSubGroupSelection(highlight.range)) {
+		const auto sel = highlight.range;
 		const auto single = st::messageTextStyle.font->height;
-		const auto begin = HistoryView::FindViewY(view, sel.from) - single;
+		const auto todoy = sel.empty()
-		const auto end = HistoryView::FindViewY(view, sel.to, begin + single)
+			? HistoryView::FindViewTaskY(view, highlight.todoItemId)
-			+ 2 * single;
+			: 0;
+		const auto begin = sel.empty()
+			? (todoy - 4 * single)
+			: HistoryView::FindViewY(view, sel.from) - single;
+		const auto end = sel.empty()
+			? (todoy + 4 * single)
+			: (HistoryView::FindViewY(view, sel.to, begin + single)
+				+ 2 * single);
 		auto result = top;
 		if (end > available) {
 			result = std::max(result, top + end - available);