Hello @HaiHatan, noted at https://github.com/ValveSoftware/steam-for-linux/blob/master/RelNotes.md#installation, sharing a Steam library folder between OSes is not supported and can have undefined behavior.
Sorry, but this is an unsupported use case.
Nothing extracted yet.
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Please describe your issue
I've tryed to add my old windows library located on a mounted harddrive after I navigate to "/media/SSD2TB/Steam Games" the folder where the old Lib is and select it nothing happand. not even an error
Steps for reproducing this issue: