Minecraft version: 1.12.2
Wizardry version: 4.2.10
Environment: Server

Issue details: Multiple players on my server have reported being unable to open shrine chests. They've killed the wizards, lost the debuff, gotten the victory sound, etc. One sent me a screenshot of the chest still with the 'ward' effect on it, but another said that he couldn't open the chest even though the visual effect had disappeared.

The problem started server-wide within the last two days and did not coincide with any mod update.

I'm facing this bug now 😢

Okay, sounds like something isn't syncing properly. Creative mode players with operator permissions can normally open the chests anyway, you may at least be able to get the loot out that way.