Not able to close a library that work with fiber scheduler algorithm or this_fiber

I am developing a library which use boost fiber. There I used this_fiber::get_id(), But as soon as I specify this statement I am not able to close the library. Same happens when I specified "boost::fibers::use_scheduling_algorithm< priority_scheduler >();"

Here is the small test case to recreate the scenario
liba.so created from bellow code with -fno-unique-symbols enabled

#include
#include
using namespace std;

int func1(int)
{
cout << "this fiber id " << boost::this_fiber::get_id() << endl; // if this line is commented out then the problem resolved.
cout << "It is a func1" << endl;
return 1;
}
----------
main code from where the library gets loaded
#include
#include
#include
#include
using namespace std;
int fun(string & flName) {
void *handle;
typedef int (*fn)(int);
fn fn1;
handle = dlopen(flName.c_str(), RTLD_LOCAL|RTLD_LAZY);
fn1 = (fn)dlsym(handle, "_Z5func1i");
(*fn1)(2);
cout << "handle :" << handle << endl;
int ext_code = dlclose(handle);
printf ("end exit code %d\n", ext_code);
}

int main(void) {
std::string fileName("dirpath/liba.so");
fun(fileName);
fun(fileName);
fun(fileName);
return 0;
}

Output.
output, when this_fiber is commented out

handle : 0x234567
end exit code 0
handle :0x345678
end exit code 0
handle : 0x456789
end exit code 0
----- but when this_fiber::get_id() is active then

handle : 0x234567
end exit code 0
handle :0x234567
end exit code 0
handle : 0x234567
end exit code 0

How can I deal with this scenario so that dlclose can successfully close the library and release the library handle?