is_moving property of motor Group

I observed a strange behavior with the .is_moving property of a motor group. If I move one of the motors of the group with the command move, then the property "is_moving" remains False, while the group status is MOVING. When using the .move method of the motor group everything is fine.

Is this behavior the one intended for .is_moving?

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Welcome to BLISS version 1.3.0 running on pclucio (in bliss Conda environment)                           
Copyright (c) 2015-2020 Beamline Control Unit, ESRF                                            
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INS2 [36]: from bliss.common.motor_group import Group                                                     
INS2 [37]: def test():                                                                                   
      ...:     group = Group(omega,alpha)                                                                
      ...:     move(omega,10,wait=False,relative=True)                                                   
      ...:     print(f'group.state = {group.state}')                                                     
      ...:     print(f'group.is_moving = {group.is_moving}')                                             
      ...:     print(f'omega.is_moving = {omega.is_moving}\n\n')                                         
      ...:     while omega.is_moving : sleep(0.1)                                                        
      ...:     group.move(omega, 10, wait=False, relative=True)                                          
      ...:     print(f'group.state = {group.state}')                                                     
      ...:     print(f'group.is_moving = {group.is_moving}')                                             
      ...:     print(f'omega.is_moving = {omega.is_moving}')
                                      
INS2 [38]: test()                                                                                        
Moving omega from 20 to 30                                                                               
group.state = MOVING (Axis is MOVING)                                                                    
group.is_moving = False                                                                                  
omega.is_moving = True                                                                                   
                                                                                                         
                                                                                                         
Moving omega from 30 to 40                                                                               
group.state = MOVING (Axis is MOVING)                                                                    
group.is_moving = True                                                                                   
omega.is_moving = True