I did upgrade to the R&D version but fabs are stable and have been for a while so I think this should go here. If I should move it to R&D Feedback let me know and I'll remove this.
Reproduction:
1. Set up a feed to any fabricator with enough blocks to make two or more blocks of any type. It's easiest to reproduce this if you have enough to make multiple copies of the same block.
2. Start production on the first block. Leave repeat off.
3. Just as the fab finishes and the Cancel button becomes the Craft button, click Craft again.
At this point the fab will take in resources as if it's crafting, but the counter remains at 0/xx. When the materials run out it will poof out a black cloud as if you canceled production. Sometimes it will continue to wait for resources and continue destroying them, or it will stop and behave normally. Canceling production or removing/reinstalling the fab will reset it.
Reproduction:
1. Set up a feed to any fabricator with enough blocks to make two or more blocks of any type. It's easiest to reproduce this if you have enough to make multiple copies of the same block.
2. Start production on the first block. Leave repeat off.
3. Just as the fab finishes and the Cancel button becomes the Craft button, click Craft again.
At this point the fab will take in resources as if it's crafting, but the counter remains at 0/xx. When the materials run out it will poof out a black cloud as if you canceled production. Sometimes it will continue to wait for resources and continue destroying them, or it will stop and behave normally. Canceling production or removing/reinstalling the fab will reset it.