There problem is that "In place" editor is activated after introducing variable together with a new "Introduce variable" hint.

Steps to reproduce:

- create simple piece of code:

int main(int argc, char** argv) {
    int x = 1;

    return 0;
}

- select 'x'
- do "Introduce variable"
- the tip is still active so do "Introduce variable" again
Result: we got broken code
int main(int argc, char** argv) {
    int  = x;
    iint x = x;
    nt  x= 1;

    return 0;
}