cpptools running button disappears.

[ycnx]

The triangle in the figure above disappears.
I don't know how to solve it, reinstalling expansion is invalid.

Now, it's like this, but I only according to press F5 to run cpp:

[sean-mcmanus]

What file do you have active when the button disappears? What triggers it to disappear? Are you sure the active file is a C or C++ file? Is the C_Cpp.debugShortcut setting set to true? Is the document of schema type "file"?

[ycnx]

It appeared! I don't know when and why the setting of the debugshortcut is automatically canceled, but the problem is solved, thank you!