Working with permissions and dashboard pages

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I've installed the latest version of C5.8 (8.4.1). I've steup some permissions for a "webmaster" group. It's my believe that a webmaster shouldn't see any users. So disabled the members in the sitemap. I also did this with the "reports/forms" page. I'm not using any forms on my website, so I don't want any webamster to see Reports / Forms. But now I get a Forbidden Page when cliking on "Reports" in the Dash. Looking in the code I saw a hardcoded redirect to /reports/forms.

Why is this programmed? Shouldn't it look for the first "viewable" child? This way I can't really use the permissions as I would like too. A user with no or little skills is now overwhelmed by Dashboard options.

Any ideas?

DeWebmakers