I have a strange problem. I have an UITextField in which the user should write the amount of something, so the field is called \"amountField\". Everything looks fine, when t
So...
After many hours of trying many things - I have found the problem. In my case the problem is the font. I really don't know why, but the author of the font made the font weird (leading etc.), it has a blank space on the bottom. I don't know why, but when you are editing the text all of the text properties are ignored, but after you finish editing, they are applied.
So, if you have a similar problem, try changing the font to Arial or something similar.
For a full explanation, please consult these following links: link 1 and link 2. The solution recommended in these links can avoid you a lot of headaches and can even be applied to fix problem like text moving to the top when you start editing an UITextField (using System font or other particular fonts).