First of all, i want to mention that my english is not the best because I'm from germany.
I found some bugs/glitches:
If you draw a line with with Shift+Drag an hold down Alt, the line is restricted to a 45 degrees line. That is fine, but in the deco-editor the line is not restircted if you hold down Alt.
If you move a sign with the sign tool and you move your mouse to the elements bar and click a powder or a wall or anything (except sign tool), the sign will be sticky to the mouse, until you choose the sign tool and click again.
if you want to cut a sign with Ctrl+X, the sign will not be removed, but if you paste the sign again, a new sign is created.
if you move a sign and release your mouse over another sign, the moved sign will be sticky to the mouse if you click 'OK'.
And I had some ideas about new functions/elements:
Why is there a liquid oxygen, but no liquid hydrogen? (I can give more information and uses if needed)
I had the idea of an electronic element, that has the function of PSCN and NSCN: If it is sparked, it will invert the state of elements that can be powered (e.g. SWCH, HSWC, PUMP, GPMP, LCRY,...), so an enabled switch will be disabled and at the same time an disabled pump can be enabled.
in the deco editor you should be able to copy and paste the decorations with Ctrl+C/X/V.
This is my first thread here, please say if I made something wrong.
I don't know why no liquid hydrogen. Probably no-one bothered because it didn't seem interesting, since Powder Toy already has explosive liquids and cold liquids so there was nothing obviously unique about liquid hydrogen. I suppose if enough people want it and it has interesting uses it could be added. So yes, please give more information and uses.
A use for the new electonics element would be that electonic saves could be done much smaller, now you have to make this with at least two switches, that needs very much space, the new element would just need one pixel.
I would call it INVW (= INVert Wire), it can be sparked by anything that conducts and it would invert the state of any elemet that can be powered.
The liqiud hydrogen could be used, as mentioned, for rockets because it would burn at extremly high temperatues (~5000 degrees? more/less?) and if you mix it with LOXY and then light it, it maybe could burn at the highest possible temperature? You colud also use it for gas tanks, because LOXY is a liquid and in an pipe that looks ok, but hydrogen as a gas in a pipe looks not very good, because gas has a 'shiny glow' around it and so the gas tank looks like it would glow.
And I found another bug: You can't place a sign with the zoom tool like you place a element with the zoom tool. Thee zoom tool is ignored by the sign tool and the sign is placed directly under the mouse cursor, even if the mouse is over the zoom window.
What about the Copy & Paste-function in the deco-editor?