Hi. Looks like the issue wasn't even the update, neither is KDE's fault. It seems that the variable XDG_DATA_DIRS wasn't defined in fish (my default shell). It's defined in bash tho. If I switch to bash as my default shell the system works as expected.
I don't know how my fish got messed up tho. I had it as the default for months. I remember recently my PC froze and I couldn't close the terminal. I guess it happened in that moment.