Is your feature request related to a problem? Please describe.
With custom resource packs etc. the Dialogue window can look very disjointed. I assume, die dialogue background uses another Minecraft ui asset and stitches it together to fit the required size.

Describe the solution you'd like
A dedicated asset for ui elements so they can be changed vie resourcepack.

Describe alternatives you've considered
finding out which base asset is used and modifying it in my resourcepack to fit both uses. (viable workaround for now, would prefer not to have to use a workaround)

Additional context
Only context is that this mod is amazing and I'm very thankful it exists <3

Thanks for the report. Could you maybe provide me an example resource pack / screenshot so that I'm able to reproduce this and to provide a fix for this.

The dialog itself is already a separate asset like Dialog so it should not be disjointed by a resource pack or so.
The configuration menu on the other hand is based on the original assets, so this could look disjointed with a resource pack.

Sorry for taking so long to reply, took a break from server maintenance.
I actually meant the gui-box around the dialog, so the grey part in this picture: Not mine
But either my problem was fixed by the last version, or maybe there was a problem with my pack that resulted in the asset not beeing used.
So anyway, problem solved and thank you for your time and awesome work in general! <3