Proton Beam disappears during building

We are currently playing Dragonfall Bazaar on C4.

I am building Proton Beams on each lane and so far it was never a problem to build a Proton Beam with 10 nodes. Now I can build 2 Proton Beams with 10 nodes, but when I try to build the third one, I can only build 9 nodes. Whenever I try to build the 10th one, the Beam simply disappears.

There are enough DU left. When I try to build my third 10-Node-Proton Beam, there are still 190 DU left.

Is there a node-limitation for each map? On Burried Bastille I have never had this problem.

This occurs when your first node is too close to spawn (even though it lets you place it) or your 10th node is too far from your 9th node (again even though it lets you place it or is green).

Thanks. In the end playing around made it possible. 

My friend had something similar to this but with his Weapon Manufacture. When we lose a round and replay, instead of having 7 placed on the floor only 3 would be placed which is weird. The good thing is that he could sell it and get all the greens back and rebuild it without requiring more greens :D

Wow, thanks for mentioning. I better keep an eye if this happens to me too.