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Issue is reproducible in the trunk build 200709250000 as well as in the latest instrumented builds. Steps to reproduce: 1) Create a UML java platform model project 2) Create a class diagram 3) Create 2 class elements (C1, C2) 4) Add an operation op1 to C1 5) Add a generalization link and connect it from C2->C1 7) Select C1 in the redefined dialog 8) Click operation op1 and class C1, and add a parameter (e.g. String i) IDE hang at this point (See attached stacktrace) This issue is not reproducible in the beta1 build.
Created attachment 49516 [details] Thread dump attached
Clarification to step 8, it should be clicking on op1 in class C1 and add a parameter to the operation.
fortunately or unfortunately, it is an exact duplicate of 116055. *** This issue has been marked as a duplicate of 116055 ***