I found the issue. It seems that using the wildcard sentence of the form cmi.command.gm.* in Builder's permissions is what caused this. By adding cmi.command.gm.others and setting that to false I was able to prevent Builders, Specialists, etc. from changing other users' gamemode.

After making a few more interesting observations, I have come to the conclusion that the proposed NBT mass-replacer fix would not actually help ease the workload. In fact, it might be harder to do than just going around replacing them by hand.

I've done it.

File directly from Discord.

Note to self for later...

AdvFlat isn't even currently loaded onto the server. Either this issue is prevalent below AdvBuilder rank, or AdvBuilders have a spooky permission, which isn't CMI, that allows them to change other folks' gamemodes. It's most likely the former. Someone will have to run some tests to this ends on the server, probably me.

I've gone ahead and looked around. Nicknames work fine in chat, but the issue is not perfectly resolved because they do not appear correctly in tab. Changing task description and priority to update the situation.

I think all the bugs mentioned here have either been solved or redirected to their own individual bug reports. Marking this as resolved.

I solved it by tweaking the alias in CMI config. Was super easy.

Several notes:

Some images are not affected by this, though. Consider the Blocktopia is Here! post's main content, for example. It seems these unaffected images use a proxy.php that redirects an imgur link through the site, rather than being hosted directly on the site.

It is FAWE. Be careful with the syntax, the first number deals with the material. 1 is stone.

It does not appear to be fixed yet on my end.

Compiled from staff discord, from Swift:

I fixed it.

I think this resolved when Hex ran the X11 thing. See T59.

This seems to have disappeared. It no longer shows up on join events.

This looks like a standard permission issue. I'll look into it.

It looks like the big red error occurs on any user join event, not just on a new player.

I fixed it. It was the same as the one in TAB. In fact, the one in TAB had come back, meaning they were related. Making sure it doesn't happen again.

I fixed it, along with walkspeed.

Yeah it's resolved.

It appears not to have any effects on region functionality. I made some tests to this ends.

Looks like somebody fixed it.

Appears to be fixed. Thank you Comp_!

I fixed it. It was an extra space in the Novice title in LuckPerms.

Oh, and the water portal in EscRes main lobby also doesn't work. Upping the priority a tad.

I also noticed that a sign in EscRes main lobby still says "Create" on it. The one right near the join sign.