Cracking Unit not in build menu if Biofuel is researched before Advanced Diesel

Issue description

When researching Biofuel before Advanced Diesel, the Cracking Unit doesn't show up in build menu because there is no Distillation tab visible. When searching for it, it shows up in the results.

Reproduction steps

1. Load attached savegame
2. There is already researched Biofuel and Advanced Diesel in progress
3. The Cracking Unit should be under Distillation tab but there is none visible. When searching for Cracking Unit - it shows up and is buildable. After researching Advanced Diesel - the Distillation tab shows up along with the Cracking Unit

Game version and build number

v0.7.2 b432

Operating system

Windows

Attachments

Update3_First_Game.save

Files not imported: Update3_First_Game.save

I just bought CoI this week, and I was very confused by this error; I thought I was doing something wrong. The tech tree does allow for researching Bio-fuel before Advanced Diesel, but it is not currently possible due to the Cracking Unit being (invisibly) tied to Advanced Diesel.

This was fixed in one of our previous updates. Thanks for reporting it!