As you all have known, nachals have VERY fast spawn rate thus that is why they are good for farming.
----SPAWN RATE OF NACHAL: BEFORE UNIQUE SPAWN BUG------
But now however, after the "unique spawn bug", the spawn rate of the "red nachals" and "red yachals" have droped dramatically.
--------THE TWO SCREEN SHOTS ABOVE, SHOW THE SPAWN RATE OF NACHALS AFTER THE UNIQUE SPAWN BUG HAS ENDED ------------
As you move to the "Yachal rooms", you will find it quite empty too.
----SCREEN SHOT OF YACHAL ROOM AFTER UNIQUE SPAWN BUG--------
And along we go, to the "Mole rooms", as you might or might not know... the spawn rates of moles before today was extremely low. BUT, as you can see from the screen shot below, the spawn rate has magically increased, while the spawn rate of nachals and yachals have decreased.
-------LOOK THREE GIANTS MOLES !!!!!! -----------------
Note: These screen shots are all taken on the "1st floor" of the cave. I also went to the second floor, but the spawn rate there was about normal. (Low spawn rate in moles, and normal spawn rates in nachal room.)