Freezes when "Add to Group"

[JoKalliauer]

JabRef 5.0-dev--snapshot--2018-07-12--master--dd9b22911
Linux 4.15.0-24-generic amd64
Java 1.8.0_171

Steps to reproduce:

1. open any bib-file (f.e. input_4196_4197.bib )
2. Rightclick on any entry and choose "Add to Group"
3. JabRef freezes

Terminal

jkalliau@jkalliau-Z87M-D3H:~$ java -jar /home/jkalliau/prgm/JabRef/JabRef--master--latest.jar
08:59:05.436 [JavaFX Application Thread] INFO  org.jabref.logic.importer.OpenDatabase - Opening: /home/jkalliau/ownCloud/PhDJK/LaTeX/Style/LiteratureJK.bib
08:59:06.432 [JavaFX Application Thread] INFO  org.jabref.logic.importer.OpenDatabase - Opening: /home/jkalliau/Desktop/input.bib
08:59:14.184 [JabRef CachedThreadPool] INFO  org.jabref.logic.importer.OpenDatabase - Opening: /home/jkalliau/Desktop/input4196.bib
08:59:17.623 [JavaFX Application Thread] ERROR org.jabref.logic.citationstyle.CitationStyle - Can only load style files: Preview

[bernhard-kleine]

I cannot confirm the behaviour, I have just added a new entry to a group, same Jabref version.

[JoKalliauer]

@bernhard-kleine : It might be related to #3301 (comment):

You could try to change the Look and Feel. Other users reported problems with GTK L&F

So this is most likely a problem of the OS with GTK.

[mlep]

I can confirm the behavior.
I thought it could be related to the LookAndFeel too, but I could not find how to change it (in JabRef 4.3.1, it was in Option -> Preferences -> Appearance).

JabRef 5.0-dev--snapshot--2018-07-12--master--dd9b22911
Linux 3.11-2-amd64 amd64
Java 1.8.0_172

[JoKalliauer]

@mlep : Sorry for writing unclearly
@stefan-kolb reported in #4190 (comment)
appearance tab inside preferences is empty

so it is known by the developers that you can't change the Apperance.

But that would not not be a bug/problem as long as this Look&Feel would work on every OS.

[tobiasdiez]

I cannot confirm the issue (with the most recent development version and on Windows)

[bernhard-kleine]

But drag and drop an entry (some entries) into a group is no longer possible:
JabRef 5.0-dev--snapshot--2018-07-15--master--a44d31668
Windows 7 6.1 amd64
Java 1.8.0_181

[Siedlerchr]

Thank you for reporting this issue. We think, that is already fixed in our development version and consequently the change will be included in the next release.

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.

[JoKalliauer]

@Siedlerchr
I tried with:

JabRef 5.0-dev--snapshot--2018-08-24--master--f43b9c7e8
Linux 4.15.0-32-generic amd64 
Java 1.8.0_181

and my desktop still freezes (have to open a virtual terminal to kill java)

[JoKalliauer]

@Siedlerchr #4233 (comment)
Thanks: java -jar -Djavafx.embed.singleThread=true JabRef.jar worked with:

JabRef 5.0-dev--snapshot--2018-08-24--master--f43b9c7e8
Linux 4.15.0-33-generic amd64 
Java 1.8.0_181