Somebody use Strategy OnRowChange in Qt 4 with MySQL on Linux?

[tnsr]

Hello.

"Code example here:":http://qt-project.org/doc/qt-4.8/demos-sqlbrowser-browser-cpp.html

I have got table in my MySQL database.
Then I select driver MySQL from list and select any table from list.
Then I change data in any existing record(or insert record and change data) and move cursor to other row.
And now I expect that data saved in my database.(Becorse setEditStrategy is QSqlTableModel::OnRowChange.)
I check data in table in another program - but table not changed.
Then if in sqlbrowser select table in widget again - all visible changes lost.

deleting rows work correctly - but in code for deleting setEditStrategy is QSqlTableModel::OnManualSubmit and SubmitAll()

Say me how to know reason of this behaviour. Is it bug of QtSQL in Qt 4.8.5?
May I use Qt Creator, gdb or other some debug options(methods) for diagnose?
Somebody use Strategy OnRowChange in Qt 4 with MySQL?

[tnsr]

I think - it is bug in QSqlTableView
I will be use qt5. Because "workarounds" is not well.

"bugreports.qt-project":https://bugreports.qt-project.org/browse/QTBUG-35671