QUOTE (frostwyrm @ Apr 7 2012, 20:07)

well not by selecting, but for example you click on title and it shows you input but when I press enter and not change anything it changes ID3 to ID3v2.3 (ID3v1 ID3v2.3). That seems to be default in options under mpeg, I didn't change anything in there.
Well, you have described a classic example of misuse.
You should learn more intensively how to use the user interface of a machine.
It is a well-known agreement and understanding when dealing with machines, that pressing [Enter] is a commitment to the machine to perform the currently available prepared action.
In general, pressing [Enter] confirms a change in an edit field or confirms the executing of a pre-selected button field.
If you open an edit field, regardless if the current content will be changed or not, and you leave the field by pressing
[Enter], then all subsequent related internal processes
will be executed.
If you open an edit field, regardless if the current content will be changed or not, and you leave the field by pressing
[Esc], then all inputs and subsequent related internal processes
will be discarded.
When editing a cell in the Mp3tag list view, the change will be executed immediately against the underlying file, when leaving the cell by pressing [Enter].
This action also includes the saving of the file with the currently specified tag types.
DD.20120421.1045.CEST