The book is an unsupported secondary source. The photo (Not photos, as apart from one of them, all the others are either Export or not PFMs at all) is a PFM with a different radar configuration to the version we have coming to the game. In the same way, the MiG-21Bis can have its radar systems removed and swapped out for one that can fire and guide Kh-66, but we dont have that. We have a version with the pure air-to-air radar and much in the same way, we have the PFM with the Kh-66 capable guidance system.
No there is not a bug report at all. There is a discussion topic. Thats
not
a bug report, so do not mislead people.
Bug reports go here: https://forum.warthunder.com/index.php?/forum/1957-weapons-and-ordnance/ and require you to provide the minimum level of information required. If you want to submit one, please source your photos properly clearly stating what aircraft it is and what its carrying (I don't mean just you claiming it, I mean a source that confirms the photograph) and we can forward it on to be reviewed properly.
To add, I've also not been ignoring anything. Perhaps you were not aware but its just been Christmas and most of us are on holidays. Please don't expect me or anyone else to be sitting in a discussion topic on a MiG-21PFM and treating it as a bug report when its not.