Subscreen Text bug

I don't know how long this bug has been around, but it seriously needs to be fixed. Every so often when I mess with one of the subscreens in my quest, the text will get messed up. If I try to edit it, ZQuest crashes. If I leave it alone, exit ZQuest, and open it back up, I can edit it without it crashing, but it changes what the Text says. For example, the word "ENERGY" becomes a weird jumble of symbols, like commas, when the bug happens, and if I exit ZQuest and come back, it says "LONGTAN" instead. What in the world does that mean? I have yet to find out how or why the bug occurs, but it does. Just try it. All I've done is make the text, mess around with the subscreen, exit the subscreen editor, mess with some tiles and sprites, and when I came back, the text has been changed.