Usually using CodeWarrior to Debug program,the display interface is shown in figure 1.

But recently when I debug the program,the display interface is shown in figure 2.

In order to read he real-time data,I have to right-click , chose "Mode→Automatic","Scope→Local","Scope→Global","Mode→Periodical".
I want to know what caused the problem, and what should I do
Thanks so much!