Auto-completion is not properly activated with the code snippet

How to reproduce

Go to tools / options / Text Editors / snippets
Define a snippet, e.g.,

sort($cont$.begin(), $cont$.end(), $Func$);

And then, call the defined snippet in the editor,

When I try to define $cont$, so I write down the name of container by auto-completion, the second $cont$ is not properly auto-completed.