Description of the issue:

If I put the Drill in the Workbench and remove the drill head, it is removed in the UI but not in the drill itself. When I break the workbench and place it again, I can get the drill head again out of it.

Sometimes, ALL upgrades (augers, lubricator, large tank) disappear from the drill. But I can not reproduce it reliably.

I've made a video to clarify this issue: https://www.youtube.com/watch?v=vHFzqmeoWa4&feature=youtu.be

Also, I am playing on a dedicated server.

Versions & Modlist

https://pastebin.com/8D4LeRGn

Edit by @malte0811: Fixed both links

Also, I am playing on a dedicated server.

with sponge or similar or with plain forge?

also your modlist link is broken

with sponge or similar or with plain forge?

just plain forge

also your modlist link is broken

https://pastebin.com/ML7tSc32
hope this works now...

yes :)
thx for the info, i was assuming maybe some odd behaviour from sponge there

I can't reproduce this. I think I can guess why the upgrades are disappearing, the fix will require a Forge build later than the current recommended one (>=14.23.4.2718). I'll implement the fix and then maybe talk to Lex about getting a new recommended build. The duplication may be caused by the same issue.