Noticed that when I was giving myself materials thru the F1 menu to check craft times on explosives it would say you cannot craft this item in the F1 Console. Checked and made sure it was unlocked in the workbench and was close enough to it. After waiting about 5ish mins and I make 1 black powder 1 explosive using materials Ive spawned in it'll let me craft the timed explosive. Maybe this is is intended maybe its not? wanted to share, its no0t that big of a henderance but wanted to let you know. I'd be more than happy to try and get a video if needed.

Think I may have found they problem, while in vanish mode I dont think it allows you to craft items. might be an issue with vanish will check the permissions with vanish.