Thanks to Lyrarium for posting this on Reddit, he found what it could either be a bug or just a coincidence. It starts with the player creating a platoon and stay alone in the platoon when pressing battle. His experience with this is that he got placed as either Top Tier or same Tier battles all the time.
Other players already started testing based on his reports and the majority reported back with the same experience, either placed as Top Tier or same Tier battles all the time.
CaptainMuffler from SEAL tried this using Tier VIII and in eight games he only got matched against Tier IX once and he never got matched against Tier X. Twitch Streamer skill4ltu was doing this during his stream last night and he got the same results: Top Tier all the time!
Source: World of Tanks Reddit
Can this be considered bug exploit?
Now it comes the tricky part, can this be considered a bug exploit and a reason for Wargaming to ban any user doing it? In my opinion it’s a grey area, while it’s a simple bug and the player isn’t directly affecting nor does he have an advantage over other players, it can be considered a bug exploit because it makes the player be either Top Tier or end up on a same tier battle, making each battle a lot easier to perform better. I wouldn’t recommend anyone trying this, bug exploit is against EULA and be punishable with a permanent ban.
This is clearly not something that was meant to be there and how Matchmaker should work, and again please remember I haven’t tested this myself, but I’ll keep an eye out on this and see what other players are reporting.
Update #1 – 12:15
I’ve been in contact with Ph3lan and MrConway and they are now aware of this and confirmed Wargaming is currently investigating this. I’ll update the post accordingly as soon as I have more information.
Update #2 – 15:20
MrConway confirmed this was working for him, but a further investigation is required. Nothing else was reported back at the moment, but I had several players contacting me confirming that in 10/20 battles, either they were Top Tier 100%, other cases seems out of 10 they get 8 Top Tier battles.
Russian blogs have also reported on this and in over 30 battles, they ended up being Top Tier 100%. It seems this is getting widely spread across players, so I would expect a quick fix from Wargaming.
Update #3 – 16:25
Got confirmation from Wargaming this is a bug and they are working to fix this issue. Also Ph3lan, Wargaming Community Manager kindly confirmed that the exploit of any but is against game rules.