I've split issue #118230 as Gordon asked.
The bug is reproducible in build 20071015. Despite the newly implemented "Information" windows "Pop To Here" still works
for "addressed" stack frames.
Steps to reproduce:
- create a new multithreaded application using the following code:

#include <math.h>
#include <sched.h>
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>

volatile int threadcount = 0;
int numThreads;
pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;

unsigned long factorial(unsigned long x) {
    if (x <= 1) {
        return 1;
    } else {
        return x * factorial(x-1);
    }
}


// This is the function that is called whenever a thread is created
void *threadfunc(void *args) {
    int id = (int) ((long) args);
    unsigned long fac = factorial((unsigned long)id);
    pthread_mutex_lock(&mutex);
    printf("Thread %3d computed factorial(%3d) = %15lu.\n", id, id, fac);
    pthread_mutex_unlock(&mutex);
    return NULL;
}

int main(int argc, char **argv) {
    
    numThreads = 12;
    if (argc >= 2) {
        numThreads = atoi(argv[1]);
    }
    
    int myid = numThreads;
    for (numThreads--; numThreads > 0; numThreads--) {
        pthread_t tid;
        pthread_mutex_lock(&mutex);
        pthread_create(&tid, NULL, threadfunc, (void*)numThreads) == 0;
	#ifdef linux
        sched_yield();
	#endif
        pthread_mutex_unlock(&mutex);
        pthread_join(tid, NULL);
        
    }
}

- build the project with -pthreads option for both compiler and linker
- set a breakpoint inside the function "factorial(unsigned long x)"
- run debugger
- when the debugger stops at the breakpoint open "Call Stack" window, it contains number of elements "Address:[@0x<hex
address>]"
- call "Pop To Here" several times on any of numerical (addressed) frames, notice that commands work and Information
windows do not block them
Result: IDE hangs. It does not respond any user action and can be closed only by Task Manager.