diff --git a/sources/ui/titleblockpropertieswidget.cpp b/sources/ui/titleblockpropertieswidget.cpp
index edce4217f..d561a3c57 100644
--- a/sources/ui/titleblockpropertieswidget.cpp
+++ b/sources/ui/titleblockpropertieswidget.cpp
@@ -194,7 +194,16 @@ TitleBlockProperties TitleBlockPropertiesWidget::properties() const
 		prop.useDate = TitleBlockProperties::UseDateValue;
 		prop.date = ui->m_date_edit->date();
 	}
-	else if (ui->m_current_date_rb->isVisible() && ui->m_current_date_rb->isChecked()) {
+	else if (!ui->m_current_date_rb->isHidden() && ui->m_current_date_rb->isChecked()) {
+			/* isVisible() (unlike isHidden()) also depends on the whole
+			 * ancestor chain being visible, not just this widget's own
+			 * state -- inside a QTabWidget page (both the New Project and
+			 * Project Properties dialogs embed this widget in one), it's
+			 * false whenever this isn't the active tab, silently dropping
+			 * "current date" back to the useDate/date default (no date)
+			 * even though the radio button is still checked underneath.
+			 * isHidden() mirrors the read side's own check in initDialog(),
+			 * and isn't affected by an ancestor tab switch. */
 		prop.useDate = TitleBlockProperties::CurrentDate;
 		prop.date = QDate::currentDate();
 	}
@@ -237,7 +246,16 @@ TitleBlockProperties TitleBlockPropertiesWidget::propertiesAutoNum(
 		prop.useDate = TitleBlockProperties::UseDateValue;
 		prop.date = ui->m_date_edit->date();
 	}
-	else if (ui->m_current_date_rb->isVisible() && ui->m_current_date_rb->isChecked()) {
+	else if (!ui->m_current_date_rb->isHidden() && ui->m_current_date_rb->isChecked()) {
+			/* isVisible() (unlike isHidden()) also depends on the whole
+			 * ancestor chain being visible, not just this widget's own
+			 * state -- inside a QTabWidget page (both the New Project and
+			 * Project Properties dialogs embed this widget in one), it's
+			 * false whenever this isn't the active tab, silently dropping
+			 * "current date" back to the useDate/date default (no date)
+			 * even though the radio button is still checked underneath.
+			 * isHidden() mirrors the read side's own check in initDialog(),
+			 * and isn't affected by an ancestor tab switch. */
 		prop.useDate = TitleBlockProperties::CurrentDate;
 		prop.date = QDate::currentDate();
 	}