The two dots and the tah of hahTahTwodotshorizontalbelow-ar should be below not above it.
you mean uni076F, right?
Yes.
So not only the decomposition, also the name needs to change?
Depends on how you understand what the below in the name refers to; hah and below it a tah and two dots (right) or a hah with tah and below the tah two dots (wrong).
I was thinking that because you wrote it as below in the title already.
That is the name from Glyphs 2, but I now I see that Glyph 3 has it as hahTahTwodotshorizontalabove-ar which should be changed indeed.