I'm very glad to see you back here in the "Ubuntu MATE Community"! I'm very sorry that you have been extremely sick Good that you are now getting better. I really hope that you soon completely recover
This issue of the the UN (United Nations) flag / emblem / logo appearing in Ubuntu MATE has indeed appeared a few times here in the "Ubuntu MATE Community". The first discussion topic is this one we're in now, that was started by @Sineis_Arilla on 14th May of the current year (2024). Then, on the following month (on 2nd June 2024), here in the "Ubuntu MATE Community", the following similar discussion topic was started by @surfrock66:
In that other topic, you can find the following answer by @ironfoot (accepted as being the "Solution" of that topic) where @ironfoot found the likely "cause" of the issue which has now been confirmed by you, @gordon (thank you very much for that!), that is: "un" = "United Nations" but also "un" = "update notifier" !
About three months later (on 12th September 2024), @mickee started a similar topic:
... and I referred @mickee to the previous topic and to the finding made by @ironfoot :
Finally, about a month ago, on 12th September 2024, @courrier started the following somewhat similar topic, related to the cc compiler icon appearing as the flag of Cocos Islands and the sh icon appearing as the flag of Saint Helena in "MATE System Monitor":
So, @gordon, if you could please submit a patch upstream to fix the "United Nations" flag issue, as you've kindly suggested, that would be great! Also, if it's easy for you to create and submit a similar patch to the "sh" and "cc" country flags issue in "MATE System Monitor", that would also be great!
Thank you very much and, again, I hope that you quickly and completely recover from your health issues!
Good that you are now getting better. I really hope that you soon completely recover