should work

old-commit-hash: 388c4273385ee4c67b1a229ccb9abac6dd94dd0f

manager.py

@@ -1,4 +1,5 @@
 import time
+import os
 import sys
 import signal
 import multiprocessing
@@ -20,6 +21,7 @@ if __name__ == '__main__':
 
   # SystemExit on sigterm
   signal.signal(signal.SIGTERM, signal_handler)
+  os.register_at_fork(after_in_child=lambda: signal.signal(signal.SIGTERM, signal.getsignal(signal.SIGTERM)))
 
   p = multiprocessing.Process(target=launcher, name='python_process')
   try:

system/manager/manager.py

@@ -187,6 +187,7 @@ def main() -> None:
   # SystemExit on sigterm
   # signal.signal(signal.SIGTERM, lambda signum, frame: sys.exit(1))
   signal.signal(signal.SIGTERM, here)
+  os.register_at_fork(after_in_child=lambda: signal.signal(signal.SIGTERM, signal.getsignal(signal.SIGTERM)))
 
   try:
     manager_thread()