select to end of line with on QLineEdit with input mask does not work properly

I have a QLineEdit with an input Mask of type "A00:99:99.99;0". The current value of the widget is "N00:00:02.00".
When I place the cursor just after the "N" and I enter <shift-end>, I would suspect all characters except the "N" to be selected "N[00:00:02.00]". However, only the first 3 zeros and the first colon are selected "N[00:0]0:02.00".