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## Steps to reproduce
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  Please, explain the sequence of actions necessary to reproduce the
  crash
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 1. ...
 2. ...
 3. ...

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## Version information
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 - Which version of GTK you are using
 - What operating system and version
  - for Linux, which distribution
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## Warnings
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 - If the application generates warning messages before crashing please
   report them here
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## Backtrace
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