Debug hang up on loop

[AndreaRunner]

Hi,
i use atom on windows 10 to debug laravel project on homestead via xdebug
The debugger stop correctly on breakpoints but when reaches a loop (foreach for example) it stops and the button continue, step over, step in, step out are non available

Why ?

xdebug.ini:
zend_extension=xdebug.so
xdebug.remote_enable = 1
xdebug.remote_connect_back = 1
xdebug.remote_host=127.0.0.1
xdebug.remote_port = 9001
xdebug.max_nesting_level = 1000
xdebug.remote_handler=dbgp
xdebug.remote_mode=req
xdebug.remote_autostart=false
xdebug.idekey=xdebug-atom
xdebug.remote_log=/home/vagrant/sites/xdebug.log

Thanks in advance for response