Unable to connect to server with ParaView 5.12

ParaView Support
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Issue is there: https://gitlab.kitware.com/paraview/paraview/-/issues/22623

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For me (using Paraview 5.12.0), I found two workarounds:

  1. As explained above, there is a hidden dialog box that’s stealing the focus. To get rid of this dialog box, press Enter or Escape keys on the keyboard.
  2. The second workaround: I have the plugin StreamLinesRepresentation (see Tools → Manage Plugins) that is automatically loaded. When I disable it, I no longer have this issue of the frozen dialog box.

I hope this help.