Wierd bar next to folder in finder

[Petri]

Hi all!

I'm relatively new to mac OS. I just found a weird bar next to a folder in Finder. I cannot access the folders contents through the Finder but can for example list the contents with Terminal and duplicating the folder works just fine.

Here's a picture of what it looks like:

Any help is greatly appreciated.

 

[Kaveman]

That means something is copying.