When Javin enters the church, he dips his fingers in holy water and crosses himself from left to right in the Roman Catholic style. Orthodox Christians drink from the holy water rather than dipping and cross themselves from right to left. If Javin is a Christian in majority-Muslim Uzbekistan, he is almost certainly Russian Orthodox, which is borne out by his use of the Orthodox phrasing in the confession ritual.
When Red and Liz are having dinner and he explains how everything you need to know of negotiation is in the "Russian Milonga" is wrong. Tango/Milonga comes from Argentina. Major goof.
Both the church at the beginning and the one Javin attends for confession appear to be Roman Catholic, despite Uzbekistan having only a few thousand members of the Roman Catholic church. Orthodox churches do not have confession booths and rarely have stained glass reliefs. Instead the iconography is mostly gold ornaments and painted wooden icons. Also Burke's vestments are more akin to those of a Catholic priest, and not a Russian Orthodox one.
When Denisov is holding a gun to the captured CIA agent's head, he is holding the agent's head with his left hand, and his right hand, holding the gun, is crossed over the left hand. The scene cuts to the reverse angle, and his hands are no longer crossed.
When Keen and Ressler come to Uzbekistan, they are met by Uzbek military, all wearing Soviet uniforms and insignia complete with red star and gold hammer-and-sickle. This portrayal of Uzbekistan is about 22 years out of date; the Soviet Union ended in 1993 and nearly all of its former SSRs are non-communist and non-Soviet democracies.
The agents are supposed to be in Uzbekistan, yet at 35:18 a panorama of Raushskaya Naberezhnaya in Moscow is shown.
By this stage, it has become abundantly clear that Reddington has partnered up with the FBI because he is using them to take down selected opponents of his to serve his own agenda. His hold over Liz and her superiors has therefore evaporated. Yet she keeps complying with him.