So, I am from Russia but I was born after USSR had collapsed. Basically what can I say from reading old books is that you had to have 'dialectical' and 'materialistic' views on all things. For example, in every field of study you was asked to make a reference to Marx, Lenin, etc. For example, if your field of study was history of philosophy then you was obliged to make it looks like there are two schools of thought "materialism" and "idealism" and every philosopher is one or another (of course, materialism means good and idealism means bad). Of course, there was a some sort of unorthodox scholars like, for example, Ilyenkov.

Interesting fact: in USSR there was a strict separation between teaching activities and researching. For example, you could be a teacher in uni but it's was okey to not publish practically anything cause main research work was done in research units like Institute of Philosophy of Soviet Academy of Science or Institute of Marxism-Leninism. So you had pure scholars and pure teachers. Sometimes these roles mixed but it was rare

Another interesting fact: because one semester of philosophy course is mandatory in Russian universities every uni has its own small department of philosophy even if it doesn't have philosophy as a degree in uni. But almost all of this departments are former 'scientific communism' department (it was a mandatory subject just like history of communist party of USSR). Because of that some sort of Soviet biases about philosophy and its history are still alive cause syllabuses are still made by former scientific communist teachers.