Workaround for #2331

src/slic3r/GUI/Tab.cpp

@@ -2234,6 +2234,18 @@ void TabPrinter::build_unregular_pages()
      *  */
     Freeze();
 
+#ifdef __WXMSW__
+    /* Workaround for correct layout of controls inside the created page:
+     * In some _strange_ way we should we should imitate page resizing.
+     */
+    auto layout_page = [this](PageShp page)
+    {
+        const wxSize& sz = page->GetSize();
+        page->SetSize(sz.x + 1, sz.y + 1);
+        page->SetSize(sz);
+    };
+#endif //__WXMSW__
+
 	// Add/delete Kinematics page according to is_marlin_flavor
 	size_t existed_page = 0;
 	for (int i = n_before_extruders; i < m_pages.size(); ++i) // first make sure it's not there already
@@ -2247,6 +2259,9 @@ void TabPrinter::build_unregular_pages()
 
 	if (existed_page < n_before_extruders && is_marlin_flavor) {
 		auto page = build_kinematics_page();
+#ifdef __WXMSW__
+		layout_page(page);
+#endif
 		m_pages.insert(m_pages.begin() + n_before_extruders, page);
 	}
 
@@ -2318,6 +2333,10 @@ void TabPrinter::build_unregular_pages()
 
 			optgroup = page->new_optgroup(_(L("Preview")));
 			optgroup->append_single_option_line("extruder_colour", extruder_idx);
+
+#ifdef __WXMSW__
+		layout_page(page);
+#endif
 	}
  
 	// # remove extra pages