Issue persists as of 0.14.12. I'm trying to get this thread moved back into the Bug reports board instead of opening a new report there. All the info is here.

Well, the prototype is unchanged but numbers are definitely handled differently internally now.
Thanks for the much more quantitative confirmation than my experiment. Though in this case the difference/problem is noticeable enough to be identified from casual observation alone.

Can we get this ...

I'm certainly believe the numbers are the same, but I still think there's another problem here.

Just now, I carried out the following experiment for both 0.13.20 and 0.14.5


Create a new sandbox game.
Click the left button on all the prompts essentially giving you starting items, all research ...

I'm not checking values, but the turning speed of the tank in 0.14 is quite slower than 0.13. It's a profound difference that I noticed immediately. Was the increase in maneuverability a bug in 0.13? I've checked the changelog, but I'm not understanding why you were concerned with comparing the 0.14 ...

Only medium biter has vunerability against fire (strange inconsistency), other biters have no resistance against fire.
https://forums.factorio.com/download/file.php?id=13896

Is this a bug that should be reported? I've noticed this as well, and came to the same conclusion from the resistance ...

FYI, there's a bit of an issue downloading 0.13.17 from the website. I needed to refresh the experimental builds page several times to get the 0.13.17 downloads to even show up (otherwise 0.13.16 shows as the latest, and if it wasn't for this forum post, I wouldn't have even known there was a new ...