You may have an input on a form that fires an onblur, onFocus, onChange, onKeyUp, onKeyDown, etc event that doesn’t get fired as it should. Use the “fireEvent” command in selenium ide after entering the value.
I discovered a bug in the Selenium IDE today where I needed to use the typeKeys command and the value included a period. The period would be stripped out for some reason. The solution is to break the command into two separate commands. First, use the “type” command and include the period or dot in the value (nick@gmail.). Then, create another command on the same input and use the “typeKeys” command to add the rest of the value (com).