Hi @JeZxLee
that is kinda funny, because that happens always when I start Libreoffice the first time in a floating window manager like on XFCE, KDE or Gnome. However, no Issue in i3 and sort of.
It looks like that it has no predefined window size, therefore it goes the minimal size (almost zero).
But sorry, I have no solution to offer. Maybe someone can take look there. Would like to see a fix as well.
Greetings