Battlegrounds - going below 6000 points

Just played two games after having passed the 6000 point mark earlier this week. Thought I could not go below 6000, but from 6031 and 8th I lost 83 points taking me to 5948, and next game 7th spot took me 66 points down to 5880.

Is this a bug, or just a change to the ranking?

Could I have read about the disabling of rating floors anywhere? Pretty annoying to have it working, then testing new heroes and get punished. Feel like just stop playing, so obviously this could be a good time.

yes, in the link i posted, which is a post from the multiplayer forum from one of the community managers