Strange behaviour after casual match desync

Title: Strange behaviour after online match desync

Summary: I (Geiger) was playing Rook Hugger (Jaina) in an online casual match when the connection desync’d after a couple of rounds. I was then taken to an AI mirror match against Geiger; not sure if it being a mirror match was significant or coincidence. The match counter at the top went to 5 rounds instead of the usual 4 (see screenshot below) but after I won 5 rounds it went to a 6th round anyway. After I won the 6th round it went to the winning animation and then froze, so I had to alt-tab out and close the game.

Steps to reproduce: Not sure if / how I can reproduce it as it seemed to happen after a desync.

Attachments:

Game Version: v1.16623

System Information:
Windows 10 Home
Intel® Core™ i5-6400 CPU @ 2.70GHz
NVIDIA GeForce GTX 1060 6GB