OSX specific: 1. For slNew and slDlg settings layout modes main frame could be minimized to the ridicules size.
So, set size for the Plater (as a min(default) size for the wxPanel)
2. model->Clear() invoke wxEVT_DATAVIEW_SELECTION_CHANGED. So, set prevent_list_events before this call.
3. Added a rounding for the scale value
Fix of #4261 (for the English version was called GetValue for non-created check control)
5c142ccfd6