Exactly the comment I was going to go for, I suspect DEV is attempting to stall progressing for the player or increase the difficultly, but in fact this simply makes fitting a space ship frustrating.
I would rather the waves of enemies be of greater quantity or quality and I need a little fortune within my build to progress.
A couple of other issues I am currently finding are that my ships are only going within ANY weapons range, if told to close all the way in, medium and hold position will sit on the map not contributing in any manner.
The other issue is the hover pop up box on ships in the setup screen can be a bit of a pest, I quite often need to right click or drag scroll the screen to remove it, allowing me to select objects that would be hidden by it. I would suggest making it a little more reactive and rapid in its appearance/disappearance, or relocating the bounding box for this, off to the side of the screen.
Edit:- Of course the game is still fun, I am glad to see active development, I had seen many iterations previous to my initial foray in December then it went quiet for a while. So Bravo!