You already got expert comments from David and Eizens so I think it will help you to decide if you want to enable 802.11r or not. However, problem you have described is more on the system configuration side and related to GUI.
Could you share a screenshot of WLAN settings? Also try creating a new SSID and see if that also behave same way.
Syamantak Omer | Community moderator | Sr.Staff TSE | CWNA | CCNA | RASZA | RICXI