ritzlal: No issues with the default mail client for me sorry.
That's really puzzling then. My phone is stock from Australia and I have only applied the 4.2.2 update.
Still K9 is a nice mail client which looks like stock and doesn't have this problem. I can't imagine what the problem is unless it's mail provider related except I have the same problem on Gmail on the stock mail client but not the Gmail app.