Why is Hotspot & PPPoE showing on different Tx Rx columns ?

Hi, I use both Hotspot and PPPoE.

Hotspot shows fine, Tx as download speed and Rx as upload speed.

But PPPoE is showing them just opposite.
Its showing download in Rx and upload in Tx.

Why is that ?
Did I do a mistake somewhere ?

See my screenshots of both hotspot and PPPoE.

Sorry, I mean, why is the WAN showing opposite side ??

It should show total PPPoE+Hotspot in Tx and Rx as total upload.
But it showing opposite.