I have the following permission node:
-modifyworld.blocks.interact.enderchest:?*
for my creative world (inventory control is done in another way)

Most of the time it works, but I found that a player can open ender chest
when holding a splash potion
even I add a permission node to block the throwing, it still opens the ender chest since the plugin does NOT check interact node (confirmed with pex user <user> toggle debug)