Fix QPlainTextEdit cursorUp/Down in combination with non-visible blocks

QPlainTextEdit uses QTextCursor::movePosition to reposition the cursor
after pageUp/Down. If this cursor happens to be in non-visual mode
(the default), it might end up on an invisible block. This results
in magically unfolding sections in Qt Creator.

1 files changed, 1 insertions, 0 deletions

diff --git a/src/gui/widgets/qplaintextedit.cpp b/src/gui/widgets/qplaintextedit.cpp
index 89fe7b80a1..b637c19719 100644
--- a/src/gui/widgets/qplaintextedit.cpp
+++ b/src/gui/widgets/qplaintextedit.cpp
@@ -906,6 +906,7 @@ void QPlainTextEditPrivate::pageUpDown(QTextCursor::MoveOperation op, QTextCurso
         setTopBlock(block.blockNumber(), line);
 
         if (moveCursor) {
+            cursor.setVisualNavigation(true);
             // move using movePosition to keep the cursor's x
             lastY += verticalOffset();
             bool moved = false;