Before the lockdown, we regularly had our client's testers in our office to evaluate the prototypes of potential features.

Some of them would just be left on their own with the software and tell is their experience afterwards. The Application is tested on our machines while the Testers are taking notes on their devices.

So one of the testers suddenly told us she had a "non application-related, general technical problem".

Well it turned out that she selected some text in the application running on our machine, then right-clicking and copied it and then unplugged her USB-Mouse, plugged it in on her Laptop and wondered, why she couldn't paste the text.

Since then, my respect for our UX department grew enormously since we very rarely get complaints.