Chest upgrades are not applying to chests. I've tested different chests and different upgrades on different worlds--creative and survival, singleplayer and multiplayer. The chests do not upgrade upon right clicking them with the upgrade item, as instructed by the mod.

So the method for using the upgrades may have changed or they simply don't work.

Since the issue got fixed, I am going to close this.

They don't work at all

This is a forge bug; They work on 1.14.3 but in 1.14.4 the code that we used currently goes uncalled.

Forge released a new version (28.0.46) perhaps they fixed this?

Nope, i've just tested with 28.0.46 and no result

Please try with 28.0.49.

Confirmed to be working! Thanks

Be warned that upon upgrading chest all items are expelled from chest

Can you open a new bug report with a photo of this? Thank you!

Off course! #197 created