I've been running tests using teams from all 5 women's leagues (player career). The Women's Champions League (UWCL) has some bugs in the competition structure. (All of this can be tested by using the calendar to sim.)
1. Sometimes the wrong teams qualify for the UWCL. This is mostly a French issue. Often the 4th place team qualifies instead of the 3rd place. I've also seen the runner-up in the finals not qualify, but both teams in the 3rd place match qualified. It's possible Paris FC is glitched. (Spain and Germany look good, but I'm unsure about England.)
2. Seeding is messed up. Often there will be 2 teams from the same country in the same UWCL group.
3. After the 1st season, there will be 20 teams listed in the UWCL (viewable in "Team Stats" in the "Season" menu). There are always 3 Spanish, 3 German, 3 English, 3 French, and 8 Rest of World (ROW) teams. 4 of the 8 ROW teams will appear in the actual UWCL (viewable in "Standings")
4. There's often a men's team included in the 8 ROW teams, and that men's team will sometimes get included in the 16-team UWCL. You can confirm if you're looking at the male or female version of the team by looking at player names in "Team Stats". This bug occurs DURING the generation of a new season. If I make a save before the end of the previous season, each time I reload and generate a new season, there will be new "Rest of World" teams selected for the UWCL.
So the good news is we can keep reloading over and over until there are no men's teams in the UWCL.
The men's teams are always Viktoria Plzen or Sparta Praha and never both. Viktoria Plzen doesn't have a women's team in FC25, so the UWCL is clearly taking teams from the men's category by accident.