I've noticed that some research items - like lasers and engineers - are not advancing, seemingly no matter how long I wait - I'm pretty far into the game, and have only seen the Task Manager maxed out - everything else except Darwinians (see below) either appears stuck at v2.0 or won't progress at all.

The bar for Darwinians is "maxed", but it won't actually give me the final research item despite the bar being full.

Is this a game bug? There's no timer so I can't tell if these items are just taking absolutely forever to advance; how long should I wait before I can consider this an actual problem?