Hello, here are some bugs i've noticed but i don't know what causes them since they happen randomly. 1- After deleting a selection by pressing "supr", the pixels inside that deleted selection start re-appearing when they become in contact with a line im drawing while holding the mouse. 2- After using CTRL+Z, the last pixel i've drawn on gets "locked", i can't draw on it, it gets unlocked once i draw on another pixel. 3- Copying frames sometimes doesn't work, i right click>copy frame to make sure i copy the frame, and when i right click>paste in another sprite, nothing happens. For some reason the only safe way i can get it to work guaranteed that it will copy/paste it is by keeping both sprite windows opened while copying and pasting. 4- GMS2 crashes when i close the sprite editor, sometimes it gets to save the sprite, and sometimes it doesn't, it shows a message saying it couldn't load 1 frame or something like that.