Galaxy Tab 4 7" - Keyboard Wonky

[QuiGonJohn]

Help, all of a sudden our Galaxy Tab kybd is going wonky. It randomly will add extra letters, like when I typed Have it made it Havex when I pressed on E. I already turned off "Predictive Text".

Can anyone else tell me what might fix this? This is making it extremely hard to use for email or even entering addresses on GPS (co-pilot).

Thanks,

[QuiGonJohn]

I looked for, but did not find, some kind of auto-correct list. I noticed a couple recurring patterns. If you type 'e' you get 'ex' and if you backspace to remove the 'x', both letters disappear. If you type 't' you get 'tv' and if you backspace to remove the 'v', both letters disappear. If you type the letter 'o' you get 'o,' and if you backspace to remove the ',', both characters disappear. Has anyone ever seen something like this? Is there a fairly good chance that doing a Factory Reset would clear this? I hate to go to that extreme measure, but it may be necessary.