I have found
s->enableShiftTextInput = value.getProperty("showTextBox", true);
in ScriptTableListModel.cpp and
setDefaultValue(ScriptSlider::Properties::sendValueOnDrag, true);
in ScriptingApiContent.cpp
I guess they are causing the issue.
However I am trying to make the true to false
setDefaultValue(ScriptSlider::Properties::showTextBox, true);