Fake "error: cannot open folder"?

Writing this topic as I’m seeing it.
I haven’t tried to reproduce it in a different context.

Nevertheless, error screen pops up each time but in the end it always access to the folder.

simple step by step is:
1- go to a folder at the root
2- play sample with enter
3- long press F5 to go to preview setting
4- press back
5- try to go again in the previous folder
6- error screen appears
7- wait until it disappears and it goes inside the folder
8- repeat from step 2

bonus question: in the above scenario is there a shortcut or a key to go back to the previous folder instead of the SD card root when pressing Back?

Update:
Graphic glitch when pressing shift+back in the preview sound screen then scrolling with the encoder.

Another graphic glitch? when messing with output channel, run/stop and back in the preview sound window. I guess it was already reported but it seems that the sample only plays on the left side.

Shift+Back

Thanks.
Is it possible to ask for a modification?
When exiting the preview sound submenu it would be nice if it goes back to the previous menu and not the SD card root.

If you’re adding preview sound volume adjustment in this menu it would be nice to change this in the meantime.

I had another graphic bug by the way.
start.bmp displayed several times like the following capture and video.