Hello. I have noticed that flags of some countries are blank in game (but they look correct on the xvm website in settings tab). I had the same problem in previous versions of xvm as well. I'm not sure if I am the only person having this problem or every xvm user sees these flags blank. For example I have a problem with flag of Montenegro.
edit: Problem solved. Some mod pack caused some flags to appear blank in game (example: https://i.imgur.com/cx7W9lB.jpg) I removed all mods, installed clean xvm and it's fine now.