diff --git a/src/corelib/time/qdatetimeparser.cpp b/src/corelib/time/qdatetimeparser.cpp
index 82389613ee7..79f055c8083 100644
--- a/src/corelib/time/qdatetimeparser.cpp
+++ b/src/corelib/time/qdatetimeparser.cpp
@@ -1281,18 +1281,14 @@ QDateTimeParser::scanString(const QDateTime &defaultValue, bool fixup) const
 
                 if (isUtc || isUtcOffset) {
                     timeZone = QTimeZone::fromSecondsAheadOfUtc(sect.value);
-                } else {
 #if QT_CONFIG(timezone)
+                } else if (startsWithLocalTimeZone(zoneName, usedDateTime) != sect.used) {
                     QTimeZone namedZone = QTimeZone(zoneName.toLatin1());
-                    if (namedZone.isValid()) {
-                        timeZone = namedZone;
-                    } else {
-                        Q_ASSERT(startsWithLocalTimeZone(zoneName, usedDateTime));
-                        timeZone = QTimeZone::LocalTime;
-                    }
-#else
-                    timeZone = QTimeZone::LocalTime;
+                    Q_ASSERT(namedZone.isValid());
+                    timeZone = namedZone;
 #endif
+                } else {
+                    timeZone = QTimeZone::LocalTime;
                 }
             }
             break;
diff --git a/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp b/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp
index 7659c9722e0..1054e5f9680 100644
--- a/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp
+++ b/tests/auto/corelib/time/qdatetime/tst_qdatetime.cpp
@@ -7,7 +7,7 @@
 
 #include <QTimeZone>
 #include <private/qdatetime_p.h>
-#include <private/qtenvironmentvariables_p.h> // for qTzSet()
+#include <private/qtenvironmentvariables_p.h> // for qTzSet(), qTzName()
 
 #ifdef Q_OS_WIN
 #   include <qt_windows.h>
@@ -3255,10 +3255,15 @@ void tst_QDateTime::fromStringStringFormat_localTimeZone_data()
     QTimeZone gmt("GMT");
     if (gmt.isValid()) {
         lacksRows = false;
+        const bool fullyLocal = ([]() {
+            TimeZoneRollback useZone("GMT");
+            return qTzName(0) == u"GMT"_s;
+        })();
         QTest::newRow("local-timezone-with-offset:GMT")
             << QByteArrayLiteral("GMT")
             << QString("2008-10-13 GMT 11.50") << QString("yyyy-MM-dd t hh.mm")
-            << QDateTime(QDate(2008, 10, 13), QTime(11, 50), gmt);
+            << QDateTime(QDate(2008, 10, 13), QTime(11, 50),
+                         fullyLocal ? QTimeZone(QTimeZone::LocalTime) : gmt);
     }
     QTimeZone helsinki("Europe/Helsinki");
     if (helsinki.isValid()) {
diff --git a/tests/auto/corelib/time/qdatetimeparser/tst_qdatetimeparser.cpp b/tests/auto/corelib/time/qdatetimeparser/tst_qdatetimeparser.cpp
index 32753d895f6..7f97e551a6b 100644
--- a/tests/auto/corelib/time/qdatetimeparser/tst_qdatetimeparser.cpp
+++ b/tests/auto/corelib/time/qdatetimeparser/tst_qdatetimeparser.cpp
@@ -46,6 +46,7 @@ class tst_QDateTimeParser : public QObject
     Q_OBJECT
 
 private Q_SLOTS:
+    void reparse();
     void parseSection_data();
     void parseSection();
 
@@ -53,6 +54,37 @@ private Q_SLOTS:
     void intermediateYear();
 };
 
+void tst_QDateTimeParser::reparse()
+{
+    const QDateTime when = QDate(2023, 6, 15).startOfDay();
+    // QTBUG-114575: 6.2 through 6.5 got back a bogus Qt::TimeZone (with zero offset):
+    const Qt::TimeSpec spec = ([](QStringView name) {
+        // When local time is UTC or a fixed offset from it, the parser prefers
+        // to interpret a UTC or offset suffix as such, rather than as local
+        // time (thereby avoiding DST-ness checks). We have to match that here.
+        if (name == QLatin1StringView("UTC"))
+            return Qt::UTC;
+        if (name.startsWith(u'+') || name.startsWith(u'-')) {
+            if (std::all_of(name.begin() + 1, name.end(), [](QChar ch) { return ch == u'0'; }))
+                return Qt::UTC;
+            if (std::all_of(name.begin() + 1, name.end(), [](QChar ch) { return ch.isDigit(); }))
+                return Qt::OffsetFromUTC;
+            // Potential hh:mm offset ?  Not yet seen as local tzname[] entry.
+        }
+        return Qt::LocalTime;
+    })(when.timeZoneAbbreviation());
+
+    const QStringView format = u"dd/MM/yyyy HH:mm t";
+    QDateTimeParser who(QMetaType::QDateTime, QDateTimeParser::DateTimeEdit);
+    QVERIFY(who.parseFormat(format));
+    const auto state = who.parse(when.toString(format), -1, when, false);
+    QCOMPARE(state.state, QDateTimeParser::Acceptable);
+    QVERIFY(!state.conflicts);
+    QCOMPARE(state.padded, 0);
+    QCOMPARE(state.value.timeSpec(), spec);
+    QCOMPARE(state.value, when);
+}
+
 void tst_QDateTimeParser::parseSection_data()
 {
     QTest::addColumn<QString>("format");