[API BUG] Patterns added with WorldEdit API are not working

[LoneDev]

Debug paste link:
https://athion.net/ISPaster/paste/view/9d55fbed4440474d8dfcb4e958462fb7

Description of the problem:
Seems that FAWE is not loading patterns added with WorldEdit API:

I don't see it in autocomplete and they are not working ingame. They are working fine on original WorldEdit.

How to replicate:
Create a class that extends InputParserand register an instance of it with this method:
WorldEdit.getInstance().getPatternFactory().register(parser);

Checklist:

• I made sure that I'm using FAWE on 1.12.2 or lower
• I included a /fawe debugpaste link
• I made sure there aren't duplicates of this report (Use Search)
• I made sure I am using an up-to-date version of FAWE < 1.12.2
• I made sure the bug/error is not caused by any other plugin

[Alexander Brandes]

Your ticket has been closed because it falls into one of the following categories:

• Your issue has been fixed in a newer version of FastAsyncWorldEdit for versions 1.8 - 1.12.2, get the latest build here matching the platform you need.

• Your issue targets minecraft version 1.13 or higher. This is the wrong repository then. Move to this repository and open a bug report here.
  BUT BEWARE: You should consider updating to 1.15.2, using the latest Fawe build for 1.15.2 (Build 255 when writing this, get it here) and reproducing the issue in a clean environment (fresh setup Spigot or Paper server).

• Your issue has been fixed in a build of FAWE for 1.15 or an issue exists on our new repository.

• You either didn't fill out the template or deleted it.

If none of the bullet points suits, head to the second one.