how is your sliding door middle washer oriented

[pjstock]

I didn't get any replies to a question I tacked onto the end of another thread, so I'll repost as a fresh question here

Which way is that domed washer for the sliding door middle hinge/slider (Laufwagen) supposed to be oriented - domed side facing OUT or IN
In my photo I see it is Dome Facing IN
But I think that was after my DIY do it myself reassembly last year and I think I had it backwards.

I "THINK" the round domed side should sit in the matching domed crevice. (that is how it is positioned now)

is that correct?

Could someone check their original installation and share that with me?