Noticed this bug on both the oil press and the mushroom log. With the oil press, any time its finished processing oil, the icon that would usually appear above it is missing. The mushroom log is similar, although the icon above it doesn't disappear until its finished producing all three mushrooms.
I'm playing on PC, and the game version is v1.0-948
#Invisible Machine Outputs
short cave
pseudo cliff
Hi @short cave thanks for sharing your report here with such details!
To take a better look with the team, is it possible to also send a video showing the bug? And can you send your save file also? Thanks a lot for your help! 
short cave
Hi <@651179436787630090> thanks for sharing your report here with such details!
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Here's the save file, and I'll try getting a video of the bug once I figure out how to do so