Hello!
Yes, unfortunatelly similar problems may occur sometimes. At the moment I don't know in which conditions, it is hard-to-reproduce issue.
The problem is in new workspace metadata structure of Eclipse 4. New eclipse uses CSS for styling and tries to adapt good-old eclipse UI settings to new style. Sometimes it do it wrong.
Currently the only workaround that I know is to maually remove UI settings from workspace (or to recreate entire workspace).
DBeaver workspace (default one) lives in
%USER_HOME%\.dbeaver folder.
You can go into
%USER_HOME%\.dbeaver\.metadata\.plugins\ directory and delete
org.eclipse.e4.workbench and
org.eclipse.ui.workbench folders. Then just restart DBeaver. You will loose all UI settings but at least it should fix the problem.
If it won't help then could you send me (
serge@jkiss.org or attach here) archive of .metadata\.plugins folder? I'll try to figure out what is actually wrong with it..
Thanks!