Editor crashes when opening preferences

[nnra6864]

I tried this on Unity 6000.5 and 6000.6, same thing.
I install this package, open the preferences window, and it just crashes.
Editor.log keeps constantly spamming this till I force close the editor via btop or something:

Log

UnityEditor.SettingsTreeView:SelectionChanged(IList`1) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsTreeView.cs:74)
UnityEditor.SettingsTreeView:FocusSelection(Int32) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsTreeView.cs:50)
UnityEditor.SettingsWindow:SelectProviderByName(String, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:139)
UnityEditor.SettingsWindow:RestoreSelection() (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:331)
UnityEditor.SettingsWindow:ProviderChanged(SettingsProvider, SettingsProvider) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:367)
UnityEditor.SettingsTreeView:SelectionChanged(IList`1) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsTreeView.cs:74)
UnityEditor.SettingsTreeView:FocusSelection(Int32) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsTreeView.cs:50)
UnityEditor.SettingsWindow:SelectProviderByName(String, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:139)
UnityEditor.SettingsWindow:RestoreSelection() (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:331)
UnityEditor.SettingsWindow:SetupGUI() (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:243)
UnityEditor.SettingsWindow:CreateGUI() (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:201)
System.Reflection.RuntimeMethodInfo:InternalInvoke(RuntimeMethodInfo, Object, Object[], Exception&)
System.Reflection.RuntimeMethodInfo:Invoke(Object, BindingFlags, Binder, Object[], CultureInfo)
System.Reflection.MethodBase:Invoke(Object, Object[])
UnityEditor.UIElements.DefaultEditorWindowBackend:Invoke(String) (at /home/bokken/build/output/unity/unity/Modules/UIElementsEditor/WindowBackends/DefaultEditorWindowBackend.cs:364)
UnityEditor.UIElements.DefaultEditorWindowBackend:SendInitializeIfNecessary(Boolean) (at /home/bokken/build/output/unity/unity/Modules/UIElementsEditor/WindowBackends/DefaultEditorWindowBackend.cs:355)
UnityEditor.UIElements.DefaultEditorWindowBackend:RegisterWindow(Boolean) (at /home/bokken/build/output/unity/unity/Modules/UIElementsEditor/WindowBackends/DefaultEditorWindowBackend.cs:144)
UnityEditor.UIElements.DefaultEditorWindowBackend:UnityEditor.IEditorWindowBackend.OnRegisterWindow() (at /home/bokken/build/output/unity/unity/Modules/UIElementsEditor/WindowBackends/DefaultEditorWindowBackend.cs:105)
UnityEditor.HostView:RegisterSelectedPane(Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/HostView.cs:596)
UnityEditor.HostView:SetActualViewInternal(EditorWindow, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/HostView.cs:131)
UnityEditor.DockArea:SetSelectedPrivate(Int32, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/GUI/DockArea.cs:116)
UnityEditor.DockArea:AddTab(Int32, EditorWindow, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/GUI/DockArea.cs:199)
UnityEditor.DockArea:AddTab(EditorWindow, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/GUI/DockArea.cs:192)
UnityEditor.EditorWindow:CreateNewWindowForEditorWindow(EditorWindow, Boolean, Boolean, Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/EditorWindow.cs:1360)
UnityEditor.EditorWindow:Show(Boolean) (at /home/bokken/build/output/unity/unity/Editor/Mono/EditorWindow.cs:703)
UnityEditor.EditorWindow:Show() (at /home/bokken/build/output/unity/unity/Editor/Mono/EditorWindow.cs:695)
UnityEditor.SettingsWindow:Show(SettingsScope, String) (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs:683)
UnityEditor.SettingsService:OpenUserPreferenceWindow() (at /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsService.cs:114)

(Filename: /home/bokken/build/output/unity/unity/Editor/Mono/Settings/SettingsWindow.cs Line: 361)

[davidinterlude]

On what platform? Everything worked for me on Windows but not on MacOS.

[nnra6864]

I am on linux.