У вашего броузера проблема в совместимости с HTML5
A glitch to show you how to remove undroppable items like keys or quest items from your inventory.
This is meant as a complementary visual aid to the instructions found in he PS. section here: https://www.reddit.com/r/fo4/comments/4fgbke/minor_glitches_craft_weapons_at_armor_workbench/