Windows 10 Pro x64
Spigot Server 1.12
BungeeCord Server 1.2.4.2
Minecraft Client 1.12

FYI, you linked to the wrong issue (should have been MC-118668). I'll probably look into it there.

Thanks for the background detail.  I'm going to push on Mojang to fix it since like you stated, it's the client with the problem, not Spigot and certainly not the plugin.  Not expecting to get very far, but if you don't ask, you don't receive.

To add some information on what is going on here (and because my plugin was mentioned here):

Mojang decided to identify resource packs that the server sent to the client by displaying their name as "Server" in the Vanilla Minecraft client independently from the actual file name. To change that one would need a clientside mod or convince Mojang to change this behaviour.

I personally think that the two lines of pack description are more than enough 'though to tell the user the name of the pack and what the pack contains.

Whatever the issue is its not a spigot issue or related to or fixable by spigot in any way.

Probably your plugin is always using a url ending with server.zip

Either way, this is a bug tracker and seeing as there is clearly no spigot bug this is NOT the appropriate venue for discussion.

Thanks - the protocol list does confirm what you're saying.  But something somewhere is passing in a hard-coded text of "Server" instead of the filename.  The below shows clearly, the filename of a RP being added is used on line 1 when a player adds it to the list manually.

But when FRP sends the RP to the client, the filename (though is uploaded and installed in the players %appdata%\.minecraft\resourcepacks folder correctly, it is not reflected in the list as such.  I'm struggling to understand how "Server" is being sent if there isn't a variable that is being sent with the url and hash we just don't know about?

The top one was pushed up to the player by using /usepack realcw and it gets installed and works.  But all pushed RP's use the same named pack of "Server" and validation won't allow a duplicate to be added.  Perhaps it is a classless property or parameter getting passed?

Wat.

Mojang writes the client not us. We cannot just make it understand things it doesn't know how.

Where do you get the idea that the filename is being passed?
Why not take a look at the protocol documentation to see that this is the case?
http://wiki.vg/Protocol#Resource_Pack_Send

So yes, it is impossible to do.

if the only thing a server can send is a url and hash and no name, that in itself is a bug.  If you don't want to treat this as a bug, then treat it as a feature request to actually make the server pass all the required fields to display in the client.  This should not be technically challenging or impossible to do.  The filename "is" already getting passed to the client, it also needs to pass the filename with the url and hash.

The only thing the serer can send is a url and a hash.
Please use the forums for discussing things and only use the bug tracker for bona fide bug or feature requests.

Thanks for the quick reply @md_5 - this was more about what API is available for the "Name" of the ResourcePack. I'm told by one plugin developer for the ForceResourcePacks that there is no "name" API available in Spigot to set the proper name.

I can push/send any resourcepack to a user and I know that works, but on the users end, it appears as "Server" for the name instead of the actual name of the plugin and if I send a second one to the same user, it is NOT stacked - it removes the previous one and sets the new one with a name of again, "Server".

You can use plugins to send different packs to different players, there is api for this