Projection ON despite being turned OFF. Can lead to crash

There is a problem where a projector is turned off, but its projection is still weldable. Here both projectors are off, but the merge block is still weldable. And in the control panel, the projector is off, yet the projection is there, but invisible. You can click remove. Welders will weld it.

In my blueprint https://steamcommunity.com/sharedfiles/filedetails/?id=3326303499, I have a torpedo tube, it has 2 projectors, one for a torpedo, one for a drone. after swapping one projection for the other, printing, and launching, there is a chance for this to happen. The projection is there despite the projector having been turned off earlier. Something wrong happens when the grid separates. I tried monitoring the projector whilst the grid launches and it's as if the projector disappears from the control panel, and I have to find it again.

From this point, if you click remove projection, print the drone, and launch, an inescapable error happens: "cannot find the blueprint file". It's in effect a crash as you have to close the game entirely.

I have tried replacing the projector, the merge blocks, and the projection. It does not fix it.

I will probably make a bug workaround, by turning on and off the projectors with timers.