This is a quite late game bug and really annoying. But there is a work around for it, check notes section.

Summary / Title

After researching technology "Autonomous Mining", all industry production in the entire empire is used no matter the system construction queue is empty (only left with industry conversion) or not. So no construction can be completed afterwards.

Description

This bug occured at around turn 200 for me so it's quite a late game one. I noticed it when a few turns later all my system shows ∞ on thier production timer Even systems with on-going construction. So I loaded auto-safe from few turns back and found that the cause was the system improvements "Urgent AI Research" within the technology "Autonomous Mining". Upon finish the tech research, all the industry production will be automaticlly consumed and converted to science as it was stated in "Urgent AI Research" description. Except that it converted all the industry in all systems with no regards to other projects in the queue (even ones above it). The worst part about it is that you can't undo the bug. Once all the industry is consumed, there's no way to get them back. Even cancel the "Urgent AI Research" or adding other projects into the top of the queue won't bring back industy. It simply stays at 0. 

Steps to Reproduce

1. Queue the research for technology "Autonomous Mining".

2. Be sure the System Improvement "Planet Cracker Factory/Lab" is already in your queue. It doesn't need to be actively worked on, just in the queue; in the middle or at the end, it doesn't matter.

3. Wait for the research to complete and suddenly there goes all the Industry production.

Here is a video which I demonstrate the bug.

Reproducibility

2/2

P.S. I reproduced it on the original game. And then I intentionally canceled/delayed the research for a few turns in testing (with the same save) and it still happens after the research is finished later.

Expected Behavior

1. System with other productions should finish them first after convert industry into since (if you have "Planet Cracker Factory/Lab" queued)

2. When you remove "Urgent AI Research" project (after been upgraded from "Planet Cracker Factory/Lab") converted industry should return to normal level.

Version

1.0.52

Notes

1. For the bug to occur, the predecessor "Planet Cracker Factory/Lab" must be present in the queue. See my demonstration video where I removed saied project in system Sodian and next turn it kept its industry.

2. Thus the work around would be remove all "Planet Cracker Factory/Lab" from the queue when you are about the get the research "Autonommous Mining" done and you sould be safe.

3. Even when the industry is at zero, you can still activate both industry convertion improvements: "Public 3D printing" for dust and "Urgent AI Research" for tech. And they would drove industry to negative value. xD As also shown in the vidoe. 

So... it can actually be an exploit? 

- "Will you sacrifice all your industry forever to achieve double the sinence bonus, Sophon?"

-"Sounds good, sign me up!"

Attachments

Here's the save file in case it's useful:

Game 1 pending industry bug .zip

Hello there,

Were aware of Infinite conversion improvement causing issues when upgrading, we're looking into the matter :)

Cheers,

Cool, thanks for the heads up <3