How can text input change like this?

[1Achas]

On my GS2, when I enter text in the calendar Event area the text that I input does show up just as I typed it (most of the time). When I hit Save, what I had typed somehow transforms into an incomprensible something that usually makes no sense. This has happened so many times with me paying acute attention to what's going on, I can just figure that it's a bug. Anyone else have problems like this?

 

[1Achas]

This happens in all apps. Even when I type a url, when I enter the . (dot) every single time the preceding text turns into jibberish.