I have had many problems with the new decorations editor. Maybe there could be a fix in the next update. Here are some of the problems-
-If you scroll on/off deco menu, control switches. Very annoying, keep adding unwanted particles.
-ADD, SUB, MUL and DIV do not work at all. Forced me to halt my new project.
-Can't see color when changing. Only after hitting done. Results in lots of time finding the right color
-In general, the older editor was easier to use and less glitchy. Maybe if new editor was debugged more it wouldn't be such a problem
When you explode alot of fireworks at the same time, some pixels get compressed and turn into blackhole.