dbeaver: Oracle MView refresh does not work: class org.jkiss.dbeaver.ext.oracle.model.OracleTable cannot be cast to class org.jkiss.dbeaver.ext.oracle.model.OracleMaterializedView

System information:

• Operating system (distribution) and version: Mac OS Catalina 10.15.7
• DBeaver version: 21.0.5.202105160657 (Runtime: 11.0.8+10)
• Additional extensions: None, pure installation

Connection specification:

• Database name and version: Oracle 12.1.0.2.0
• Driver name: ojdbc8:12.2.0.1 (I guess this version was bundled or downloaded from MVN central by default)
• Do you use tunnels or proxies (SSH, SOCKS, etc)? No

Describe the problem you’re observing:

The following error on attempt to refresh a view:

Steps to reproduce, if exist:

Right-click materialized view -> Tools -> Refresh Materialized view -> click ‘Start’

Include any warning/errors/backtraces from the logs

Pasting error details from the screenshot:

Execute tool 'Refresh materialized view'
	Process [SCHEMA_NAME.MVIEW_NAME]
Process error
class org.jkiss.dbeaver.ext.oracle.model.OracleTable cannot be cast to class org.jkiss.dbeaver.ext.oracle.model.OracleMaterializedView (org.jkiss.dbeaver.ext.oracle.model.OracleTable and org.jkiss.dbeaver.ext.oracle.model.OracleMaterializedView are in unnamed module of loader org.eclipse.osgi.internal.loader.EquinoxClassLoader @419ece7a)
Tool execution finished

I also found this problem in comments to other issues, but those issues are already resolved:

• https://github.com/dbeaver/dbeaver/issues/9431#issuecomment-669954813
• https://github.com/dbeaver/dbeaver/issues/8920#issuecomment-645282848