[Forge 1.16.5] All players appear to have OP Rank (but actually don't)

For some weird reason, the "OP Rank" is being given by the server to every player. I have just installed the Server Utils mod on my server a few days ago. There should only be about 4-5 OPs, however it seems that everyone is being given the rank as a default.

I am unsure of how to provide reproduction steps for this bug, it seems to be incredibly anomalous behavior. However, if it helps to provide this information, all the players that have joined the server since Server Utilities was installed have previously joined before the mod was installed. I don't know if this has anything to do with things, but I figured I would mention it anyway.

Not sure what else to say, so I'll end this with "please help."

Update: It appears to be purely a visual issue but I think it's one that still needs addressing.

[DaemonUmbra]

Please provide the specific versions of Forge and ServerUtilities, as well as listing any other mods you are using on the server

Using version Server_Utils-1.16.5-2.8.0.jar, I'm also running the following other mods (listed in no particular order)

• SecurityCraft [1.16.5]+SecurityCraft+v1.9.3.1.jar
• CB: Compressed Blocks [1.16]compressedblocks-1.0.0.20220123.jar
• Ambience Extras Ambience-1.16.5-1.0.0.jar
• Attribute Fix AttributeFix-1.16.5-10.1.4.jar
• Better Drowning BetterDrowning-1.16.5-2.0.2.jar
• Blame blame-1.16.5-3.7.0-forge.jar
• Block Swap blockswap-1.1.1.jar
• Bookshelf (library mod) Bookshelf-Forge-1.16.5-10.4.32.jar
• Brandon's Core (library mod) BrandonsCore-1.16.5-3.0.15.248-universal.jar
• Campfire Spawn & Tweaks campfirespawnandtweaks_1.16.5-1.6.jar
• Can't Sleep Clowns Will Eat Me cant-sleep-clowns-will-eat-me-1.16.4-1.0.0.1.jar I'm serious, that's literally the mod name
• Cat Has Wares catwares-1.0.1.jar
• Cave Biome API cavebiomeapi-1.16.5-1.4.2.jar
• Caves & Cliffs Backport cavesandcliffs-1.16.5-7.2.0.jar
• Caves & Cliffs Backport Additions CavesCliffsBackportAdditions-3.4.jar
• MrCrayfish's Furniture Mod cfm-7.0.0pre22-1.16.3.jar
• MrCrayfish's Guns Mod cgm-1.2.6-1.16.5.jar
• Chorus Warps choruswarps-1.16.5-1.9c.jar
• Chunk Loaders chunkloaders-1.2.2-forge-mc1.16.jar
• Clumps Clumps-6.0.0.28.jar
• CodeChickenLib (library mod) CodeChickenLib-1.16.5-4.0.7.445-universal.jar
• CoFH Core cofh_core-1.16.5-1.5.0.11.jar
• Collective (library mod) collective-1.16.5-5.15.jar
• Configured configured-1.5.2-1.16.5.jar
• Corpse corpse-1.16.5-1.0.7.jar
• Crash Utilities crashutilities-3.13.jar
• Curios API curios-forge-1.16.5-4.0.5.3.jar
• Custom NPCs CustomNPCs-1.16.5.20220515.jar
• Draconic Evolution Draconic-Evolution-1.16.5-3.0.27.462-universal.jar
• Easy Emerald Tools & More EasyEmerald-Forge-1.16.5-1.0.26.jar
• OpenBlocks Elevator elevatorid-1.16.5-1.7.13.jar
• Ensorcellation ensorcellation-1.16.5-1.5.0.4.jar
• Everlasting Skins EverlastingSkins-1.16.5-0.3.0.2.jar
• Item Blacklist itemblacklist-1.16.5-1.2.0.jar
• Just Enough Items jei-1.16.5-7.7.1.152.jar
• Krypton Reforged kryptonreforged-mc1.16.5_v1.0.0.jar
• Max Health Fix MaxHealthFix-Forge-1.16.5-1.0.5.jar
• Maintenance Mode mmode-forge-1.16.5-1.1.0.jar
• MMO Parties mmoparties-2.3.3.1.16.jar
• More Player Models MorePlayerModels-1.16.5.20220731.jar
• Nether Portal Fix NetherPortalFix_1.16.3-7.2.1.jar
• Obfuscate (library mod) obfuscate-0.6.3-1.16.5.jar
• Pipez pipez-1.16.5-1.2.15.jar
• Redstone Quit redstonequit-1.16.4-3.0.0.0.jar
• Simple Login SimpleLogin-1.16-1.1.3.jar
• Spark spark-1.9.1-forge.jar
• Spartan Weaponry SpartanWeaponry-1.16.5-2.2.0-rc-2.jar
• SuperMartjin642's Config Lib (library mod) supermartijn642configlib-1.1.6-forge-mc1.16.jar
• SuperMartjin642's Core Lib (library mod) supermartijn642corelib-1.0.19-forge-mc1.16.5.jar
• Temp Ban tempban-1-16-4-1.0.1.jar
• TerraForged TerraForged-1.16.5-0.2.15.jar
• Tesseract tesseract-1.0.27-forge-mc1.16.jar
• Thermal Expansion thermal_expansion-1.16.5-1.5.0.7.jar
• Thermal Foundation thermal_foundation-1.16.5-1.5.0.14.jar
• Time Shall Not Pass TimeShallNotPass-1.16.5-1.2.jar
• Trade System trade_system_1.16.5_V3.0.jar
• Twilight Forest twilightforest-1.16.5-4.0.870-universal.jar
• Two Players One Horse twoplayersonehorse-1.16.4-2.0.2.jar
• Vanishmod Vanishmod-1.16.5-1.1.6.jar
• MrCrayfish's Vehicle Mod vehicle-mod-0.45.2-1.16.3.jar
• Simple Voice Chat voicechat-forge-1.16.5-2.3.6.jar
• Void Totem voidtotem-1.16.5-1.4.0.jar
• Wall Jump walljump-forge-1.16.4-1.3.7.jar
• WorldEdit worldedit-mod-7.2.5-dist.jar
• World Edit Items WorldEditItems-v.1.1.0-Forge-1.16.5.jar
• WorldProtector worldprotector-1.16.5-2.1.9.0.jar
• Wormhole wormhole-1.1.10-forge-mc1.16.jar
• What The Hell Is That (WTHIT) wthit-2.10.15-forge.jar