When parallel research is enabled and an infinite tech completes, the announcement in the message window isn't the correct level. Instead it reports the first level the infinite tech becomes available. For instance, when mining productivity completes (currently at mining 13), it report mining 3. Plastic bar prod always reports level 1, the first it was available.

Ok so I didn't actually intended to do anything about it, but the moment I pushed the update for your other issue I've realized that I could easily add a bandaid fix to this one as well.

Basically the problem is that the game doesn't support rich text for infinite techs above their first available level (unless the game itself posts it). The bandaid fix is me adding a clarification to the announcement message.