QLineEdit cursor keeps blinking when moving cursor

Product
Qt
Function
TextHandling
Version
4.6.0-tp
Platform
Linux
Platform details
Compilers
GCC
Compiler details
gcc (SUSE Linux) 4.4.1 [gcc-4_4-branch revision 150839]
Subject
QLineEdit cursor keeps blinking when moving cursor
Steps to reproduce / test case
When moving the QLineEdit cursor by keeping the cursor arrow keys pressed or entering text, the cursor continues to blink, making it very hard to see how far it has moved half of the time. This works fine in QTextEdit.

This is a regression compared to 4.5
More information
I am using qt 4.6 8a9b2acacecd4e998944d567c4a5c064c40dc999