Description editor is broken on Linux

Since a while we noticed that description editor on Linux is broken. Our current solution to that is downgrading some system libs (listed below). That temporary fix however will stop working soon as the downgraded packages may become incompatible with the rest of the OS.

This is how a broken description editor looks like on Ubuntu 20.04:

This is the list of packages and versions where the editor is still working:

• libjavascriptcoregtk-4.0-18=2.28.1-1
• libwebkit2gtk-4.0-37=2.28.1-1

And here is the stack trace:

org.eclipse.swt.SWTException: file:///home/.../apps/capella-5.2.0%20.202111301257/capella/plugins/org.eclipse.nebula.widgets.richtext_1.2.0.201711021145/org/eclipse/nebula/widgets/richtext/resources/template.html:213:50: ReferenceError: Can't find variable: getAllOptions
Script that was evaluated:
function SWTWebkit2TempFunc26(){initEditor();}; SWTWebkit2TempFunc26()
	at org.eclipse.swt.browser.WebKit$Webkit2AsyncToSync.runjavascript(WebKit.java:1184)
	at org.eclipse.swt.browser.WebKit$Webkit2AsyncToSync.evaluate(WebKit.java:1127)
	at org.eclipse.swt.browser.WebKit.evaluate(WebKit.java:1445)
	at org.eclipse.swt.browser.WebBrowser.evaluate(WebBrowser.java:406)
	at org.eclipse.swt.browser.Browser.evaluate(Browser.java:670)
	at org.eclipse.swt.browser.Browser.evaluate(Browser.java:619)
	at org.eclipse.nebula.widgets.richtext.RichTextEditor$3.completed(RichTextEditor.java:297)
	at org.eclipse.swt.browser.WebKit.lambda$7(WebKit.java:1911)

Session data:

eclipse.buildId=unknown
java.version=14.0.2
java.vendor=Oracle Corporation
BootLoader constants: OS=linux, ARCH=x86_64, WS=gtk, NL=en_US
Command-line arguments:  -os linux -ws gtk -arch x86_64

[ioolkos]

Just downloaded the latest release for 6.0 and for my environment (Ubuntu 20.04) the description editor doesn’t seem fixed.

[ioolkos]

@vik378 I did the downgrade and it worked great in Capella. However, after the following suspend of the computer, I was locked out of the graphical interface. This is most likely a total coincidence (have troubles with NVIDIA drivers from time to time), but still… 🤔 To resolve this I had to reinstall gdm3 and I’m back with the newest libraries (so no editor in Capella again).

I’ll try to use your Dockerfile, thanks for providing this & your help 👍