Larry, I took a look and it's definitely a Solaris issue. From visual inspection is seems to be a resizing issue with the content of the window, as the grid header  is clipped. It's going to take far too long for me to set up a Solaris development environment to track this issue. Can you place a breakpoint in ES_ERROR_LIST_TOOL_PANEL.build_tool_interface to check the initializing size of the docking content, tool window and the grid (as a_widget argument). There's also ES_DOCKABLE_TOOL_PANEL.build_docking_content to check out.

I'll try have my Mac around on Sunday so we can talk about it if needs be.