@darkspede, Please change the category of this post to Bug Report. Thanks.

I can confirm the rotation of the bottom layer pads. Also, there's something else wrong in your gerber generation. If you open your gerbers in gerbv you'll see that the PCB is right down in the lower left with what looks like lots of empty space towards the upper right. This is because there's a little rectangle appeared at XY 82400, 83700 in the Read Only Mechanical layer. Turn off all the other layers then zoom to fit. This does not appear in your EasyEDA PCB file.

@andyfierman I dont see this rectangle in my easyeda editor, but i do see it in my gerbv, how do i fix it?

@andyfierman and able the bottom layer, is this a bug or there is something i can do to fix it?

@andyfierman Also i deleted my pcb and convert to a new one, genenrate the gerber files again and this Mechanical Layer read only file is no longer in the .zip package

After I rebuild the pcb from new file ,the pads seems to be fine in gerber file, I will submit to JLCPCB for fabrication, see if they can notice any error