It is very common to have a pictorially adorned curtain on an aron kodesh (cabinet that hold the Torah scrolls in a synagogue).
It is also very common to have the shatz (prayer leader) stand before the aron kodesh, facing it at eye level.
It's even pretty common to have both those situations in combination, meaning in the same synagogue.
Are there any halachic sources (e.g. t'shuvos) that specifically denounce or defend the above combination of practices in light of the general idea that one ought not pray [the amida] in front of pictures (Shulchan Aruch and Rama, OC 90:23)?