Fix title/color clip duration broken after edit

CCBUG: 365653

src/bin/bin.cpp

@@ -3023,8 +3023,6 @@ void Bin::showTitleWidget(ProjectClip *clip)
                 int currentLength = clip->getProducerIntProperty(QStringLiteral("length"));
                 if (currentLength <= dia_ui.duration()) {
                     newprops.insert(QStringLiteral("length"), QString::number(dia_ui.duration()));
-                } else {
-                    newprops.insert(QStringLiteral("length"), clip->getProducerProperty(QStringLiteral("length")));
                 }
             }
             // trigger producer reload

src/timeline/clipitem.cpp

@@ -353,7 +353,7 @@ void ClipItem::resetThumbs(bool clearExistingThumbs)
 
 void ClipItem::refreshClip(bool checkDuration, bool forceResetThumbs)
 {
-    if (checkDuration && (m_maxDuration != m_binClip->duration())) {
+    if (checkDuration && m_binClip->hasLimitedDuration() && (m_maxDuration != m_binClip->duration())) {
         m_maxDuration = m_binClip->duration();
         if (m_clipType != Image && m_clipType != Text && m_clipType != QText && m_clipType != Color && m_clipType != TextTemplate) {
             if (m_maxDuration != GenTime() && m_info.cropStart + m_info.cropDuration > m_maxDuration) {