After minimizing and maximizing the application, all the pined sidebars are disappeared. Have to go to "View -> Sidebars" to un-select and re-select them.

Reproduce steps:

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Thank you for your feedback. This bug will be fixed soon in the next release.

The following error prevents the panel to be closed.

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System.NullReferenceException: Object reference not set to an instance of ...

This is really very strange behavior. The program should show some error message box - at least the system one. If installing the portable version does not help, it may be some system problem - e.g...

and sure enough, installing on a new virtual machine works like a champ. really strange.

no. error message.

the only thing that is happening is windows 10 auto-update.

got it to work for awhile by reinstalling in a new virtual machine. last time i used it was March 26. then today - ...