Unknown Server Version

At seemingly random intervals when I play Skirmish (any and all tiers) I am sent back to the title screen where under the log in is “Unknown Server Version” in orange text. I am unable to log back in and have to relaunch SC. After it is relaunched there is no problem and I am even able to rejoin the match, the problem is very annoying and I often miss half the game and/or the loot search. The error seems to be seen as a log out by the game as there is no popup error, warning, or explanation. I use steam service and I don’t know if that has anything to do with it, and I have not messed with my internet setup. I have never seen this before the update.

There has been an issue with one of our servers at the weekend.