InDesign version is 17.4, Font is Myriad Arabic. MacOS 12.4.

a. Set up a text variable to pick up a head from a page and insert it into a running head.
b. Add a running head to a page that includes the text variable.
c. Key Arabic text on a page including a yeh character

See attached image "Yeh as text - Correct alignment.jpg." Note that two dots are centered below the base of the yeh glyph.

See attached image "Yeh as variable text - Incorrect alignment.jpg." Note that the two dots below the base of the yeh glyph are shifted to the right.