I have not done extensive testing but it seems that sentient pawns break the auto bill

Exception in Verse.InspectTabBase+<>c__DisplayClass19_0.<DoTabGUI>b__0: System.NullReferenceException: Object reference not set to an instance of an object
[Ref AE79C6FD]
at Inventory.BillStack_DoListing_Patch+<>c.<Postfix>b__2_2 (Verse.Pawn p) [0x00006] in <4098953a404a40abb88e01e6009d815e>:0
at System.Linq.Enumerable+SelectManySingleSelectorIterator2[TSource,TResult].MoveNext () [0x00051] in <351e49e2a5bf4fd6beabb458ce2255f3>:0
at Inventory.BillStack_DoListing_Patch.Postfix () [0x001c1] in <4098953a404a40abb88e01e6009d815e>:0
at RimWorld.BillStack.DoListing (UnityEngine.Rect rect, System.Func1[TResult] recipeOptionsMaker, UnityEngine.Vector2& scrollPosition, System.Single& viewHeight) [0x001b9] in <630e2863bc9a4a3493f2eff01e3a9556>:0
- PREFIX Dubwise.DubsMintMenus: Void DubsMintMenus.Patch_BillStack_DoListing:Prefix(Rect& rect)
- PREFIX falconne.BWM: Boolean ImprovedWorkbenches.BillStack_DoListing_Detour:Prefix()
- POSTFIX Wiri.compositableloadouts: Void Inventory.BillStack_DoListing_Patch:Postfix()
- POSTFIX falconne.BWM: Void ImprovedWorkbenches.BillStack_DoListing_Detour:Postfix(Rect& rect)
at RimWorld.ITab_Bills.FillTab () [0x0021d] in <630e2863bc9a4a3493f2eff01e3a9556>:0
at Verse.InspectTabBase+<>c__DisplayClass19_0.<DoTabGUI>b__0 () [0x00046] in <630e2863bc9a4a3493f2eff01e3a9556>:0
- TRANSPILER net.pardeike.rimworld.lib.harmony: IEnumerable1 VisualExceptions.ExceptionsAndActivatorHandler:Transpiler(IEnumerable1 instructions, MethodBase original)