The way bipod always worked was that its 10% precision bonus was lost when not focused, even though the tooltip didn't show this. I noticed that now the weapons with bipod show 10% more move penalty in their tooltip.
I assumed this is nothing more than a cometic change meant to show the player that the bonus is lost when not focused, but now that I'm playing it seems this penalty is added on top of losing the bonus. I was using an assault rifle with a bipod, chance to hit was 58% when focused, 33% after moving. That's 25% less precision, 5% from the default move penalty ARs have, 10% from the added move penalty of the bipod, 10% must be the lost bipod bonus.
Is this intended to work this way? It seems a bit harsh given that bipod already has an AP penalty.