tabs closing by themselves

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I’m new to parrot, this forum and still learning Linux in general, so I’m not sure where this topic should go and don’t know where or have time to parse the answer if it’s already been addressed.

When I opened an html document with subl and Firefox for read/edit, my tabs will just close themselves. Open a terminal window, a tab will close. Haven’t noticed it during any other instance until now. I need tabs to not do this. Is there a setting or something? Does parrot have a problem with having a file open in more than one piece of software at a time? It’s a fresh install so the version is the current one.

  • Parrot version in use (if you are not aware of it, open terminal and type cat /etc/os-release | grep VERSION):

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