You should try resetting tool preferences for Type tool. Select the type tool and then from tool options, click reset tool or reset all tools.
Do let us know if it works for you
Further to what dominic said, in PSE 11 and 12, you get to Reset Tool by clicking the four-lined square on the upper right of the Tool Options area. In older versions, click the tiny triangle or tool icon at the far left of the Options Bar.