If anyone is having the same exact problem, I have found a fix. Any time I used any of my hot bar (1-0) I would just auto switch to 1. So, idk if I did this to my self but it was in my hot-bar settings. Just restore to default. The reason I'm posting is because I never ever went into settings, so something happened in the background that I was unaware of. Not sure if it was PC stuff, or mod stuff. Little late to the party, but hope it helps!