Problems with fetching modified object information

Hello everyone,

Since updating Cayenne from Version 4.0.M2 to 4.1 I face the following problem (which worked out o.k. before):

If I start the same web application within the same server twice and modify data in the first application, the changes are not propagated to the second application although fetching the modified object from the DB again.
"Use Shared Cache" is activated on the Data Node.
When invalidating the object, changes are visible, but I think this should work implicitly.

Have there been any changes triggering this event? If so, how can I activate it again?

Thank you in advance,
BR,
Ernst