After linking a part of my model to another part, it toggles from being seen or not seen with left mouse click regardless where you click on the program or even if you are in edit mode. Very frustrating! 

hello mister president. please make sure you didn’t accidentally set any toggle hotkeys to your mouse 1 key. check the settings, and also check the individual sprite youre having trouble with. at the bottom of the left edit box, you can find a way to set hotkeys for individual sprites.