Whenever I open one of those, I can’t see anything because the background for them has changed to white. It’s rather annoying when I went to do something because I can barely see white letters on a white background. It was originally black and I don’t know if it’s because I reset my computer or something, but it’s almost making me not want to use the app with how frustrating it’s gotten (Yes, my app is in dark mode. I have no idea what’s going on. I’ve also tried the repair thing)
Whenever I see anything like that, or don’t see 
, I think theme or Appearance. What is your Libreoffice version, your OS and desktop?
Libreoffice version 25.8.4.0 on a Windows 11 HP Victus
Repairing the install may not help, if the problem is in your user profile. So I suggest to try safe-mode first, or would directly rename your profile folder.