You didn't reveal which browser but see if the browser has a SAFE MODE for a test.
I cant figure out whats wrong with my system or my settings.
When I type a letter in G-mail, Wind Xp Home Ed. almost always the second letter after a capitol first letter types in large as in : DAvid or DAniel or BArcode, most the time it's the "A" that types in capitalized. I tried another Keyboard, same Results.

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