The first time I got this problem was on another project, and was on a cast to my custom HUD (If I remember it well), but now is on another locations.
Thank you very much for your time, if the Epic team needs more info I have the originaly “infected” files of the project, and another old project (but in 4.4.3) where I experienced it too.
Anyway, I just updated to 4.5.1 and in some hours Ill report here if the problem is solved.
Feel free to continue posting issues or comments about this issues here, when more feedback or ideas are provided earlier it will be solved