How can we reproduce it
1 Create new URP project (or HDRP)
2 In ProjectBrowser select Materials folder and rename it to e.g. "1"
3 Open that folder, select a material file and RightMouseClick->Show in Import Activity Window
Expected results: Import Activity Window is opened and asset is selected there, no warnings in Console
Actual results: Import Activity Window is opened, but asset is not selected and there is a warning in Console:
Asset 'Assets/SampleSceneAssets/2/General/Bamboo_A.mat' is selected in artifact browser, but index of the entry was not found. Please report a bug.
UnityEditor.ImportActivityWindow:ViewInImportActivity () (at C:/buildslave/unity/build/Modules/AssetDatabase/Editor/V2/Managed/ImportActivityWindow.cs:34)
Reproduces on 2022.2.0a6-a7, haven't checked on other versions