Still after update:

Exception filling window for RimWorld.MainTabWindow_Ideos: System.NullReferenceException: Object reference not set to an instance of an object
at RimWorld.IdeoUIUtility.GetStyleCategoryDescription (Verse.StyleCategoryDef cat, RimWorld.Ideo ideo, System.Collections.Generic.List`1[T] selectedStyles) [0x000d5] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
at RimWorld.IdeoUIUtility.StyleTooltip (Verse.StyleCategoryDef cat, RimWorld.IdeoEditMode editMode, RimWorld.Ideo ideo, System.Collections.Generic.List`1[T] selectedStyles, System.Boolean skipDominanceDesc) [0x0007a] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
at (wrapper dynamic-method) RimWorld.IdeoUIUtility.RimWorld.IdeoUIUtility.DoStyles_Patch0(single&,single&,single,RimWorld.Ideo,RimWorld.IdeoEditMode,int)
at RimWorld.IdeoUIUtility.DoName (System.Single& curY, System.Single width, RimWorld.Ideo ideo, RimWorld.IdeoEditMode editMode) [0x003bc] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
at RimWorld.IdeoUIUtility.DoIdeoDetails (UnityEngine.Rect inRect, RimWorld.Ideo ideo, UnityEngine.Vector2& scrollPosition, System.Single& viewHeight, System.Boolean editMode, System.Action`1[T] ideoLoadedFromFile, System.Boolean allowLoad, System.Boolean allowSave, System.Boolean reform, System.Boolean forArchonexusRestart) [0x000d7] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
at RimWorld.IdeoUIUtility.DoIdeoListAndDetails (UnityEngine.Rect fillRect, UnityEngine.Vector2& scrollPosition_list, System.Single& scrollViewHeight_list, UnityEngine.Vector2& scrollPosition_details, System.Single& scrollViewHeight_details, System.Boolean editMode, System.Boolean showCreateIdeoButton, System.Collections.Generic.List`1[T] pawns, RimWorld.Ideo onlyEditIdeo, System.Action createCustomBtnActOverride, System.Boolean forArchonexusRestart, System.Func`2[T,TResult] pawnIdeoGetter, System.Action`1[T] ideoLoadedFromFile, System.Boolean showLoadExistingIdeoBtn, System.Boolean allowLoad, System.Action createFluidBtnAct) [0x00167] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
at RimWorld.MainTabWindow_Ideos.DoWindowContents (UnityEngine.Rect rect) [0x00000] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
at Verse.Window.InnerWindowOnGUI (System.Int32 x) [0x001d3] in <2ac9ff1464ea49a284d37555c9c1f6ec>:0
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.Window:InnerWindowOnGUI (int)
UnityEngine.GUI:CallWindowDelegate (UnityEngine.GUI/WindowFunction,int,int,UnityEngine.GUISkin,int,single,single,UnityEngine.GUIStyle)


And:

Mouse position stack is not empty. There were more calls to BeginScrollView than EndScrollView. Fixing.
UnityEngine.StackTraceUtility:ExtractStackTrace ()
Verse.Log:Error (string)
Verse.Widgets:EnsureMousePositionStackEmpty ()
(wrapper dynamic-method) Verse.Root:Verse.Root.Update_Patch1 (Verse.Root)
Verse.Root_Play:Update ()

in ideology page, when u move mouse to active Bushido style in ideology, will spawn non-stop this errors