netbeans не отобразит окно проектов

$ cat /etc/lsb-release 
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=17.04
DISTRIB_CODENAME=zesty
DISTRIB_DESCRIPTION="Ubuntu 17.04"

$ java -version
java version "9"
Java(TM) SE Runtime Environment (build 9+181)
Java HotSpot(TM) 64-Bit Server VM (build 9+181, mixed mode)

$ javac -version
javac 9
$ umake --version
16.11.1

$ umake ide netbeans
[sudo] password for thufir: 
Choose installation path: /home/thufir/.local/share/umake/ide/netbeans
Downloading and installing requirements                                                    |
100% |#####################################################################################|
Installing Netbeans
|##########################################################################################|
Installation done

$ netbeans
The program 'netbeans' is currently not installed. You can install it by typing:
sudo apt install netbeans

возможно связанный с:

$ /home/thufir/.local/share/umake/bin/netbeans 
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by org.netbeans.ProxyURLStreamHandlerFactory (file:/home/thufir/.local/share/umake/ide/netbeans/platform/lib/boot.jar) to field java.net.URL.handler
WARNING: Please consider reporting this to the maintainers of org.netbeans.ProxyURLStreamHandlerFactory
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
^C

который является ошибкой, я видел перед чистой установкой.

(Возможно связанный с этой ошибкой или по крайней мере подобный.)