Matchmaking(?) issue when entering training mode

Matchmaking(?) issue when entering training mode

Tried to enter training mode with Quince/Lum. Accepted a friend request. Screen went black. After a bit (~ 60 seconds), I got the message that my opponent quit the match and I entered training mode

Expected Results: Don’t get a very long blacksreen when entering training mode.

Actual Results: Getting a very long blackscreen when entering training mode.

Attachments:
https://pastebin.com/raw/bXLXTN4x

*Game Version: * v1.19459

**System Information: ** Windows 10 Pro