Bug Build fail if no lit-material presented in scene

Way to repro - make all materials used in scene unlit. Build will fail with this:

Exception: IndexOutOfRangeException: Index 0 is out of range of '0' Length.
at Unity.Collections.NativeArray`1[T].FailOutOfRangeError (System.Int32 index) [0x00080] in <82ec470c913149358ad0c83ad628910c>:0
at Unity.Collections.NativeArray`1[T].CheckElementReadAccess (System.Int32 index) [0x0001a] in <82ec470c913149358ad0c83ad628910c>:0
at Unity.Collections.NativeArray`1[T].get_Item (System.Int32 index) [0x00001] in <82ec470c913149358ad0c83ad628910c>:0
at Unity.TinyConversion.MeshConversion.OnUpdate () [0x002a0] in E:\Work\Git\tiny_playables\playable_1\Library\PackageCache\com.unity.tiny@0.32.0-preview.54\Unity.Tiny.Rendering.Authoring\ConvertMesh.cs:561
at Unity.Entities.ComponentSystem.Update () [0x00076] in E:\Work\Git\tiny_playables\playable_1\Library\PackageCache\com.unity.entities@0.17.0-preview.41\Unity.Entities\ComponentSystem.cs:114
at Unity.Entities.ComponentSystemGroup.UpdateAllSystems () [0x000fb] in E:\Work\Git\tiny_playables\playable_1\Library\PackageCache\com.unity.entities@0.17.0-preview.41\Unity.Entities\ComponentSystemGroup.cs:472

 

That's the point) if I make all materials urp\unlit - build will fail with the message above. If I add just one urp/lit material (even it's not visible, but used in any mesh in scene) - everything works well.
I use tiny version 0.32

 

Turned out that this error happens if urp-unlit material is used on skinned mesh renderer and there is NO any urp-lit material in scene.