Campaign bug: Purchased Water Engine patent can be patented by other players, also negates your patent (Resolved: no bug)

I bought the Water Engine patent as a permanent upgrade in the campaign. When I started the next game it worked, but then towards the end another player patented the Water Engine in their patent lab. This then meant that they (presumably) had it, but my freighters and offworld market started using fuel again. I believe the freighters individually switched over as soon as they landed.

Double patent

Freighter using fuel

The images don't seem to be showing up for me, so here are the raw links:

Double patent: http://imgur.com/Evz4QFe

Freighter using fuel: http://imgur.com/2MdoQXC

Locked Post

Advanced Search

Watch this post

Do not email me updates for this post Email me updates for this post

Successfully updated karma reason!

Cold Fusion and Water Engine will switch back to using power and fuel, respectively, instead of water if those resources become cheaper than water. This is the case in your screenshot.

Successfully updated karma reason!

Ah, I see. That explains my units using fuel, then.

Is other players being able to patent things you have a patent on intended? I think the case of multiple players starting with the perk is fine, but it seems strange to allow research within mission, given that patents are usually exclusive, and would be if researched.

Successfully updated karma reason!