[NetBeans 6.0 dev. build 061018]

(This is applicable only to annotations that use background highlighting of the
annotated line, such as line breakpoint annotations).

The annotation's icon can be made misaligned with the highlighting such that the
icon is at the different line than the highlighting (see the screenshot). The
misalignment appears if the user presses Ctrl-Enter in the beginning of the
annotated line - the action inserts an empty line in place of the current line.
The current line and the annotation icon are shifted down, but the background
highlighting is not shifted. If the user then presses Enter repeatedly, more
lines are inserted and the misalignment gets larger and larger.