Make sure you are not opening a duplicate.

• I have searched the issue tracker and did not find an issue describing my bug.

Description of your suggestion.

I would highly appreciate it if you created the following options within the config:

Option to disable the flasks.
Option to edit the stackable size of water bottles.

You can use mods like CubeJS or Crafttweaker or ItemObliberator to remove items.
And there is a mod which makes the stacksize adjustable.