[15.18] unexpected Mining Drill progress bar

[H8UL]

I know there have been a few issues with productivity progress bars recently, seems like there is at least one more:

1. Added productivity modules to mining drills
2. Look at another nearby mining drill, it has a progress bar for productivity
3. Placed additional mining drills, same problem
4. This persists in game save, even after restarting Factorio

Notes

* No beacons are present (though in any case beacons don't accept productivity modules).
* No mods have been used with this save.
* This map had expensive recipes selected (probably not important)

[TruePikachu]

Did you research Mining Productivity?

[Loewchen]

Did you research Mining Productivity?

Jup.

[H8UL]

Oh, right... I didn't realize the research bonuses were shown on the progress bar too, sorry for the confusion