Found an issue with manage channels role. Have one on a server and was experimenting,
My "Role" can only Manage Channels and Roles, and does NOT have permission to edit messages. But I could go channel by channel and give myself positive permission to "Manage messages" even though I had no permission to do so before.
I think the manage chat permissions need to have the same safety from granting that permission as the manage roles permissions already has, can grant a permission to have to roles lower then yours that you have access too, but unable to give powers that you don't have already.
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