AssetModificationProcessor OnWillDeleteAsset not called

Hi,
as the title states, i tried to use The AssetPostProcessors OnWillDeleteAsset, but it doesn’t get called. A look into the source revealed InternalEditorUtility.HasPro() and HasTeamLicense() calls. I think those may be hindering it. If so, is it intended or just a leftover from indie/pro times?
Is there any callback i can use to detect about to be deleted assets (preferably before deletion, so i can compare references)?

You can use AssetPostProcessor to receive a list of the files that have been deleted.