LO: Can't modify styles. LO freezes -not responding.

Hello.

I’m having an issue with LO 5.4.1. on Windows 10 and I cannot find a solution anywhere. Everytime I try to modify styles on Writer, the program freezes and I get the -not responding- message on the headbar. I’ve already uninstalled and reinstalled the software (I used to have LO 5.3.6), as well as the user profile. Also, I opened a doc on Calc just to check if I have the same issue and I couldn’t get to modify the cell’s format.

I really need to solve this. Please, help me.