Fix for issues:
Issue 1:
1. Change "Extrusion multiplier" parameter,
2. Save edited preset.
3. Change "Extrusion multiplier" parameter -> preset wasn't marked as "modified"
Issue 2:
1. Change "Extrusion multiplier" parameter with out of range value
2. Push ENTER for the message dialog
3. Answer "Yes"
4. Same message dialog appears again