[ https://issues.jboss.org/browse/DROOLS-4791?page=com.atlassian.jira.plugi... ] Michael Anstis commented on DROOLS-4791: ---------------------------------------- The issue is that https://github.com/kiegroup/appformer/commit/ffadd2baab7067ebac737db32e63... added a `MouseDownHandler` on the `FocusPanel` that erm, sets the focus to the `FocusPanel` in response to a mouse down event. This causes the "in cell" editor to receive a _blur_ event and destroy the "in cell" editor. There is no need to add an explicit `MouseDownHandler` to set the focus on a focus panel as it's a *focus* panel and gets the focus on click anyway! I tested the large file attached to this JIRA with `kie-wb-common-dmn-webapp-kogito-testing` and `kie-wb-distributions`. Both work well now. I have also tested that the Guided Decision Table Editor and Scenario Simulation Editor are unaffected by this change and that keyboard navigation is unaffected by the removal of the explicit focus handling. -- This message was sent by Atlassian Jira (v7.13.8#713008)