One of the aux research hubs did not stick to the main research station and so stayed still near it being apart... I fixed this situation by destroying it - so another aux hub came out and only then all done well...

To reproduce (let me remember the proper way of reproduction...):

- I build the first main research station from a Mothership,
- then a time came and I bought an aux hub, but before it was build I docked the Mothership to a Scaffold,
- then I undocked it for the aux hub to be finally produced and out,
- it came out of the Mothership and... lost its course for sticking to the main research station,
- it moved to the main station and stayed near it still not making any further sticking...
- (one more possible cause of the issue - I suppose - there were many debrees of destructed enemy and my ships around the Mothership - so the aux hub moved very hard to avoid them before sticking to the main station and so lost course... but this is only a guess...)

PS
Another issue about aux hubs of Kushan and Taiidan is that their sticking animation is somewhat not smooth, they stick together in a shatter manner... In Vanilla game they moved and stuck together very naturally and smooth... In Complex the aux hubs overlap each other trying to fit a proper space and it seems that some animation frames are broken or absent so they are sticking in a manner of disappearing from the last near place and appearing already stuck to the main station...
Also the sound of sticking is delayed enormously ...

Pls investigate and add more frames for sticking animation and make a sound to be played properly in time...