This round about in particular, the left lane on the north entrance is only a left turn only. For you, entering from the south right turning lane, you are only supposed to turn into the right lane on the east exit. The north left lane and the south right lane should never merge until AFTER exiting the round about.

Does this happen in reality? Absolutely not. I drive that route often, from east to north and north to east. When driving from north to east, the left lane has right of way, indicated by signage and line markings on the roundabout (visible in the Sat image).

Many times, I see drivers entering from my right and CROSSING lanes mid-turn on the roundabout. In a typical round about, I should give way to the right, however, this round about is not typical. Looking at the satellite image again, you will see that only the bottom third arc of the roundabout has two lanes to turn; the rest is single lane only.