I even tried
#elifdef __APPLE__
{;} //do nothing
but always the same crash…
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 libcairomm-1.0.1.dylib 0x000000010a47efe0 Cairo::Context::set_source(Cairo::RefPtr<Cairo::Surface> const&, double, double) + 16 (surface.h:364)
1 rawtherapee-bin 0x00000001087262ab ThumbBrowserEntryBase::draw(Cairo::RefPtr<Cairo::Context>) + 699
2 rawtherapee-bin 0x0000000108723081 ThumbBrowserBase::Internal::on_draw(Cairo::RefPtr<Cairo::Context> const&) + 369
3 libgtkmm-3.0.1.dylib 0x0000000109726f2f Gtk::Widget_Class::draw_callback(_GtkWidget*, _cairo*) + 175
4 libgtk-3.0.dylib 0x0000000109e1971c gtk_widget_draw_internal + 364 (gtkwidget.c:7027)
5 libgtk-3.0.dylib 0x0000000109c35e9a gtk_container_propagate_draw + 362 (gtkcontainer.c:3840)
6 libgtk-3.0.dylib 0x0000000109c36443 gtk_container_draw + 147 (gtkcontainer.c:3655)