Connectors not disconnecting

Hello,

from time to time some of the connectors (changes, not always the same one) wont unlock, when I press to unlock them. They change to yellow color, they show "unlocked" in the menue and "ready to" in the shortcut-menue (bar at the bottom, sry I'm not a native speaker and don't know what's it called in english), but I can't drive/fly off with my vehikel. I can normally fix the bug by connecting and disconnecting again, and then drive/fly off as if nothing happened.

Recently I build an automatic drone system with a remote control and timerblocks, that unlock and lock the connectors. When the bug occurs, the drones cant do stuff anymore and I have to manually fix it. If I dont they "disconnect", can't fly away and get crashed when the batterys are empty. In my latest save file (attached) I could reproduce the bug over and over again with my "drone 1", which seems to trigger the bug every time when locking to a connector.

I would be very thankful if someone could look it up and provide a fix so I can automate more things in your awesome game!

If you need more infos, I will gladly provide them!

Greetings,

Jan