Eclipse crashes when opening html file with Vaadin Designer

I’m new to Vaadin and just tried to use the Vaadin Designer but my Eclipse Oxygen on Linux Mint instantly crashes when I create a new html form via “Vaadin 8 Design”. It crashes at the moment when it tries to open the html file. The Eclipse .log doesn’t report any appropriate issue.

Any ideas are appriciated.

I got an answer on https://stackoverflow.com/questions/49582061/eclipse-crashes-when-opening-html-file-with-vaadin-designer and it works. Maybe it’s still a bug?!?