Jabref: Can't input Chinese characters in biblatex source

[GongSiqiu]

JabRef version
JabRef 5.0-dev--snapshot--2018-11-09--master--bab9ae819
Linux 4.14.77-041477-generic amd64
Java 1.8.0_181
on Ubuntu 18.04

• [x] I have tested the latest development version from http://builds.jabref.org/master/ and the problem persists

Steps to reproduce the behavior:
1.Open and entry

1. Choose biblatex source
   3.Input Chinese characters
   I can't input Chinese characters in biblatex source, but I can do it in other fields and copy Chinese characters from other places to biblatex source.

Log File

Paste an excerpt of your log file here

[tobiasdiez]

The workaround posted in https://github.com/FXMisc/RichTextFX/issues/146 should work.

[CaptainDaVinci]

I would like to work on this issue.

[Siedlerchr]

Thanks to @CaptainDaVinci this should now be fixed in the latest development version.

We would like to ask you to use a development build from https://builds.jabref.org/master and report back if it works for you. Please remember to make a backup of your library before trying-out this version.

[GongSiqiu]

Yes, it is fixed. Thank you!