@HyalineV Oh, sorry for that… Hum, I just checked and I see no particular problem with UMG Widget blueprint :/.
Could you give the version of the plugin (that can be found under Edit/Plugins) and the version of the engine? It should be 2.8 as for UE4.26 for example.
Also, to be sure we’re on the same page, “UMG Widget Blueprint” is the Graph tab of a User Widget asset?