Hello Again,
Regarding this topic as continuation but I think it is a bug.
You can find attached video of the issue for the second time on another GAC but this time 5v5.
Same thing happened previous time in the 3v3 GAC (https://forums.ea.com/idea/swgoh-bug-reports-en/gac-pc-client-battle-froze/12317097)
So this is definitely a bug because I do not experience same issue during TW.
Best Regards,
Aleksandar