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Build 200410181800 1) Have a WebApp project 2) Go to project's properties|Run|Running Project 3) Change Context to empty value (valid entry) 4) Restart IDE 5) Go to project's properties|Run|Running Project 6) ERROR: Context has default value /WebApplication1 Notice: non-empty context values are preserved well.
BTW: same thing happens when you change it through context.xml editor.
Solved by fix of issue 40799.
Verified.