This is a bug which was fixed in netX Studio CDT V1.0900.
A workaround for earlier versions of netX Studio is to close and then reopen the view:
- Close the view by clicking the Close button on the view tab:
- Reopen the view by navigating to Window > Show View and choosing it from the view shortcuts list (or by choosing Other... if the view shortcut is not available):
This may happen not only with the Breakpoints view, but also with other views such as the Peripherals view, SVN Repositories, etc. The workaround for all views is the same: close and then reopen the view from Window > Show View.