After update on 24th of december 2021 during landing elevator or ailerons are getting stuck. So, I am on final in accordance to original MIG-21bis flight manual, speed 450km/h flaps t/o, reducing speed to 420km/h, flaps landing and woopsie, we've got no ailerons nor elevator. In Real flight manual there is nothing about that this event may occur. Some other people reported also loss of hydraulic pressure. If someone interested here is the link to original MiG-21bis flight manual, but in polish language. https://www.muzeumlotnictwa.pl/index.php/digitalizacja/katalog/1363
Edit: Here's english version of flight manual: https://drive.google.com/file/d/1YFYiihLhiVT1_ugmI8rBuJllueNR8ewG/view?usp=sharing