/clear should be reliable

Currently in Minecraft Java Edition 1.16, the /clear command is not reliable and will not always clear all items in a player's inventory. In instances where the player has put items into for example a crafting table, those items will not be cleared. This allows players to avoid /clear for example while being teleported into another area in an adventure map or on a server.

This was earlier posted a bug report but was marked as a feature request: https://bugs.mojang.com/browse/MC-172496