Oops, just did a mess... I copied the preset from another bug report and forgot to remove the ending part. I just wanted to point out the region bug. Anyhow, it still sounds weird that it takes so long. I mean, even if you check for the whole world, 99.99% of the chunks aren't even loaded. I think it would be better either to review the code for the regions or to deny the execution if the selection is too big. I was messing around with that in my vanilla server and it took a while before I understood what happened and restarted the server.
Oops, just did a mess... I copied the preset from another bug report and forgot to remove the ending part. I just wanted to point out the region bug.
Anyhow, it still sounds weird that it takes so long. I mean, even if you check for the whole world, 99.99% of the chunks aren't even loaded. I think it would be better either to review the code for the regions or to deny the execution if the selection is too big. I was messing around with that in my vanilla server and it took a while before I understood what happened and restarted the server.