This game's interface seems heavily influenced from Wurm (also a Java game). While that's good in some respects, it's bad in others.
From https://steamcommunity.com/app/108600/discussions/0/1837937637881281572/:
Why can't items be combined outside of the main player inventory container? So annoying having to move everything just to combine them!
Certain items can't be combined. Seems silly to me why thread, twine, and wire can't be combined individually (obviously not different materials on the same reel/spool). It's especially odd that wire can't be combined considering other types of wire (copper, steel, etc) can. I just checked \media\scripts\items.txt and it shows thread as "type = drainable" and newitems.txt (same folder) shows twine and wire as drainable too so why aren't these items able to be "poured" (combined) together (individually)?! Maybe Hydrocraft is screwing it up? I couldn't find these items listed (aside from in recipes) in any of Hydrocraft's \media\scripts\*.txt so maybe something else is overriding the "drainability" of these items? I see a red box appear in the bottom right corner at times while right-clicking things in my inventory so I checked console.txt and perhaps these errors are causing a problem with combining certain items?
Why is combining non-liquid things still called "pour"? Seems "combine" or "mix" would be a better general-purpose term for everything...
From https://steamcommunity.com/app/108600/discussions/2/1842440600603024214/ :
Craft window: the left-side list of things to craft is VERY cluttered. Why not have expandable menus that have the root action/function (box, build, bury, clean, close, craft, drill, jar, make, open, pack, place, refill, remove, stack, take, unbox, unpack, unstack, wash, etc) listed that right-expand with all the additional functions? Having to use the name filter all the time gets annoying fast. An option to list/sort by item would also be nice instead of only listing alphabetically by action/function so instead of listing by action/function the list is by item (ammo, logs, seeds, etc).
Clicking the scrollbar should move the window pane position down and clicking the scrollbar down arrow does nothing. Tab should move between form fields (text input, radio, checkbox, etc) and double-clicking a word should select it (triple-click selects all text in field).
Mousewheel scrolling in a pane, then alt-tabbing out of and back into the game should not reset the pane position to the selected item and instead leave the pane scrolled to where it was before alt-tabbing.
New:
Craft window needs a global tab search instead of only each tab. So annoying especially with Hydrocraft!
Pinned status of craft and health windows isn't remembered on game load.
Inventory columns need to be thinner and need a weight column.
Stack tooltip should show quantity. Can't always see quantity with narrow columns and small font.
Favoriting (starring) a craft recipe scrolls list all the way to top. List position should remain and not reset, requiring having to scroll all the way BACK to where the still-selected recipe is.