When I look at a factory, waila shows the correct processing type for what seems like 1 tick, then it changes to showing "smelting", no matter what kind of factory it is. And it always shows the factory type tooltip even if I turn off that option in waila settings.
With Waila-1.5.9 and Mekanism-7.1.2.184

Not sure about the second bug, but the first bug is due to how I manage factory tiers. I'll look into it when I have a chance, but its very low priority behind all the other content being developed for v8. Thanks for reporting!