Furry22PL you are my hero.
Took me 5mins after seeing this to find the culprit and I did notice something in my case which may be the cause (even if it is a little weird). The variable was called ‘InGameMenuWidget’ and the variable type was a widget called ‘InGameMenu’. It could be a long short or just coincidence but I wonder if there is some weird internal naming conflict going on in my particular case.