In https://github.com/Vazkii/Quark/blob/master/src/main/java/vazkii/quark/management/feature/StoreToChests.java I don't see any place where the dropoff button can be disabled.

You're making a bug report based on you not understanding how the mod's code works?

wat

also... @Reloque https://github.com/Vazkii/Quark/blob/master/src/main/java/vazkii/quark/management/feature/StoreToChests.java#L59-L60

[without restarting the game]

._.

That leads me here as the only way to disable it without reloading the game after disabling the feature https://github.com/Vazkii/Quark/blob/master/src/main/java/vazkii/quark/base/handler/DropoffHandler.java#L47

In my SP the client does not (without cheats) have access to that gamerule. So in order to disable this button you would need to disable the game rule and then try pressing the button?

Just turn the feature off in the config.

1. Open vanilla+quark client with Quark.cfg's "store to chests" set to true
2. Make new survival world without cheats
3. open inventory, observe dropoff button
4. escape->mod options->quark->config->management->"store to chests" = false
5. close out of options
6. open inventory, observe dropoff button.

Also works if you replace step 2 with:
2) join multiplayer server with gamerule enabled (as it is by default)

7. restart client
8. open world
9. open inventory, observe the missing button.

@Reloque Rule #1: Check for a config option first.
Rule #2: What harm is there in turning cheats on in SP if you only use them to activate gamerules?

Config hotswapping was added in the latest version.

And... my build is 4 days old. Whoops.