Large Project Explorer tree causes editor input to lag ------------------------------------------------------ Key: JBIDE-26529 URL: https://issues.jboss.org/browse/JBIDE-26529 Project: Tools (JBoss Tools) Issue Type: Bug Components: jst Affects Versions: 4.9.0.Final Environment: Java 11, Eclipse 2019.03 JEE, Windows 7 Reporter: Jesper Skov Assignee: Jeff MAURY Priority: Major Fix For: 4.12.0.AM1 Attachments: eclipse-bug-jboss.zip We use JBoss Tools with Eclipse JEE distribution. When Projetc Explorer contains a large tree (small elevator), performance of the java editor gets really bad with frequent lags. I have first reported it as a problem against native Eclipse (https://bugs.eclipse.org/bugs/show_bug.cgi?id=543678) but it turns out the problem can only be reproduced when the feature 'org.jboss.tools.jst.feature.feature.group' is installed.