Eclipse strange behaviour problem...

Hi,
I'm a Java command line programmer.

I started step-bystep with the tutorial in the built-in help, Europa
release.
From the Content view:

Workbench User Guide ->Getting started -> Basic Tutorial -> Task and
markers -> Associated Task.

All goes fine until point 7.

It says:


[...]
5. After the new task has been added, click in the editor on the first
line or any other line above the line with which the new task is
associated.

6. Add several lines of text to the file at this point.

7. Notice that as lines of text are added above it, the task marker
moves down in the marker bar in order to remain with the associated
line in the file. The line number in the Tasks view is updated when
the file is saved.
[...]


Actually task marker in the marker bar disappeared, and the line
number in the task view never update...
Now I'm thinking what will happen with brakpoints or something else in
debugging...

.