It's 2 "Total Fluid Amount item" in fluid reader GUI list.
And it not "Amount", is "Capacity".
And fluid reader not fit for TE Tank(can't find linked multiple tank)

It looks like two fluid aspect names were conflicting, will fix.

Yes, their internal name is the same, which causes these issues. It's already fixed here locally, will push soon.

First "Total Fluid Amount" display in fluid reader is amount, but in screen display "Total Fluid Capacity"

Fluid reader can't recognize linked multiple TE tank will fix in next version?

I create a new issue

This seems to work just fine in your GIF. Or are you demonstrating another tank?