diff --git a/src/app/panels/columns/DateRangeEdit.cpp b/src/app/panels/columns/DateRangeEdit.cpp
index cd43efd..d2f9151 100644
--- a/src/app/panels/columns/DateRangeEdit.cpp
+++ b/src/app/panels/columns/DateRangeEdit.cpp
@@ -20,7 +20,10 @@ DateRangeEdit::DateRangeEdit(QWidget* parent) : QComboBox(parent) {
 
 void DateRangeEdit::showPopup() {
     if (!popup_) {
-        popup_ = new QFrame(this, Qt::Popup);
+        // 父对象用顶层窗口而非本 combo：否则日历(QAbstractItemView)成 QComboBox 后代，吃到全局
+        //   「QComboBox QAbstractItemView::item」下拉项样式(padding/min-height)→ 日期格重叠错位。
+        QWidget* owner = window() ? static_cast<QWidget*>(window()) : nullptr;
+        popup_ = new QFrame(owner, Qt::Popup);
         popup_->setFrameShape(QFrame::StyledPanel);
         applyTokenizedStyleSheet(
             popup_, QStringLiteral("QFrame{background:{{bg/panel}};border:1px solid {{border/default}};"