GUYS I FIXED THE GLITCH !! it finally can *STILL* work when you clear it all.. it works!! it just looks weird when you do the equation, but it works...
UPDATE: so uh idk what happened but now you have to click the equals button twice now? idk how that happened edit: nevermind it still sometimes works, but if it doesn't, just click the equals sign twice !! edit2: so apparently it just glitches during addition, so if doing addition, click the equals twice!