Rework of 0970fb8b.

SetMinSize( ..., -1 ) still required for non-growable
panels.

eeschema/eeschema_settings.cpp

@@ -119,6 +119,7 @@ const wxAuiPaneInfo& defaultSchSelectionFilterPaneInfo( wxWindow* aWindow )
             .TopDockable( false )
             .BottomDockable( false )
             .CloseButton( true )
+            // Fixed-size pane; -1 for MinSize height is required
             .MinSize( aWindow->FromDIP( wxSize( 180, -1 ) ) )
             .BestSize( aWindow->FromDIP( wxSize( 180, -1 ) ) )
             .Show( true );

eeschema/symbol_editor/symbol_edit_frame.cpp

@@ -215,7 +215,9 @@ SYMBOL_EDIT_FRAME::SYMBOL_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
                       .Left().Layer( 3 )
                       .TopDockable( false ).BottomDockable( false )
                       .Caption( _( "Libraries" ) )
-                      .MinSize( FromDIP( 250 ), -1 ).BestSize( FromDIP( 250 ), -1 ) );
+                      // Don't use -1 for don't-change-height on a growable panel; it has side-effects.
+                      .MinSize( FromDIP( 250 ), FromDIP( 80 ) )
+                      .BestSize( FromDIP( 250 ), -1 ) );
 
     m_auimgr.AddPane( m_propertiesPanel, defaultPropertiesPaneInfo( this ) );
     m_auimgr.AddPane( m_selectionFilterPanel, defaultSchSelectionFilterPaneInfo( this ) );

gerbview/gerbview_frame.cpp

@@ -164,9 +164,11 @@ GERBVIEW_FRAME::GERBVIEW_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
     m_auimgr.AddPane( m_tbTopAux, EDA_PANE().HToolbar().Name( "TopAuxToolbar" ).Top().Layer(4) );
     m_auimgr.AddPane( m_messagePanel, EDA_PANE().Messages().Name( "MsgPanel" ).Bottom().Layer( 6 ) );
     m_auimgr.AddPane( m_tbLeft, EDA_PANE().VToolbar().Name( "LeftToolbar" ).Left().Layer( 3 ) );
-    m_auimgr.AddPane( m_LayersManager, EDA_PANE().Palette().Name( "LayersManager" ).Right().Layer( 3 )
-                                                 .Caption( _( "Layers Manager" ) ).PaneBorder( false )
-                                                 .MinSize( 80, -1 ).BestSize( m_LayersManager->GetBestSize() ) );
+    m_auimgr.AddPane( m_LayersManager,
+                      EDA_PANE().Palette().Name( "LayersManager" ).Right().Layer( 3 )
+                                .Caption( _( "Layers Manager" ) ).PaneBorder( false )
+                                .MinSize( FromDIP( 80 ), FromDIP( 80 ) )
+                                .BestSize( m_LayersManager->GetBestSize() ) );
 
     m_auimgr.AddPane( GetCanvas(), EDA_PANE().Canvas().Name( "DrawFrame" ).Center() );
 

pcbnew/footprint_edit_frame.cpp

@@ -226,7 +226,9 @@ FOOTPRINT_EDIT_FRAME::FOOTPRINT_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
     m_auimgr.AddPane( m_treePane, EDA_PANE().Palette().Name( "Footprints" )
                       .Left().Layer( 4 )
                       .Caption( _( "Libraries" ) )
-                      .MinSize( FromDIP( 250 ), -1 ).BestSize( FromDIP( 250 ), -1 ) );
+                      // Don't use -1 for don't-change-height on a growable panel; it has side-effects.
+                      .MinSize( FromDIP( 250 ), FromDIP( 80 ) )
+                      .BestSize( FromDIP( 250 ), -1 ) );
     m_auimgr.AddPane( m_propertiesPanel, EDA_PANE().Name( PropertiesPaneName() )
                       .Left().Layer( 3 )
                       .Caption( _( "Properties" ) ).PaneBorder( false )
@@ -239,11 +241,15 @@ FOOTPRINT_EDIT_FRAME::FOOTPRINT_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
     m_auimgr.AddPane( m_appearancePanel, EDA_PANE().Name( "LayersManager" )
                       .Right().Layer( 3 )
                       .Caption( _( "Appearance" ) ).PaneBorder( false )
-                      .MinSize( FromDIP( 180 ), -1 ).BestSize( FromDIP( 180 ), -1 ) );
+                      // Don't use -1 for don't-change-height on a growable panel; it has side-effects.
+                      .MinSize( FromDIP( 180 ), FromDIP( 80 ) )
+                      .BestSize( FromDIP( 180 ), -1 ) );
     m_auimgr.AddPane( m_selectionFilterPanel, EDA_PANE().Palette().Name( "SelectionFilter" )
                       .Right().Layer( 3 ).Position( 2 )
                       .Caption( _( "Selection Filter" ) ).PaneBorder( false )
-                      .MinSize( FromDIP( 180 ), -1 ).BestSize( FromDIP( 180 ), -1 ) );
+                      // Fixed-size pane; -1 for MinSize height is required
+                      .MinSize( FromDIP( 180 ), -1 )
+                      .BestSize( FromDIP( 180 ), -1 ) );
 
     // Center
     m_auimgr.AddPane( GetCanvas(), EDA_PANE().Canvas().Name( "DrawFrame" )

pcbnew/pcb_edit_frame.cpp

@@ -323,6 +323,7 @@ PCB_EDIT_FRAME::PCB_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
     m_auimgr.AddPane( m_appearancePanel, EDA_PANE().Name( wxS( "LayersManager" ) )
                       .Right().Layer( 4 )
                       .Caption( _( "Appearance" ) ).PaneBorder( false )
+                      // Don't use -1 for don't-change-height on a growable panel; it has side-effects.
                       .MinSize( m_appearancePanel->GetMinSize().x, FromDIP( 60 ) )
 #ifdef __WXMAC__
                       // Best size for this pane is calculated larger than necessary on wxMac
@@ -336,7 +337,8 @@ PCB_EDIT_FRAME::PCB_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent ) :
     m_auimgr.AddPane( m_selectionFilterPanel, EDA_PANE().Name( wxS( "SelectionFilter" ) )
                       .Right().Layer( 4 ).Position( 2 )
                       .Caption( _( "Selection Filter" ) ).PaneBorder( false )
-                      .MinSize( m_selectionFilterPanel->GetMinSize().x, FromDIP( 60 )  )
+                      // Fixed-size pane; -1 for MinSize height is required
+                      .MinSize( m_selectionFilterPanel->GetMinSize().x, -1 )
                       .BestSize( m_selectionFilterPanel->GetBestSize().x, -1 )
                       .FloatingSize( m_selectionFilterPanel->GetBestSize() )
                       .CloseButton( false ) );