After leveling a companion, your main character isn't just replaced by, something is also merged: classes, models (following screens) and spells/abilities of the related classes.

It happened once, I tried to reproduce it without success.
I remember I canceled many times the leveling up for all the 3 characters because was trying to figure out their traits and spells.
It happened after leveling Xoti, with both Mopugno (my character, a male Orlan) and Eder ready to level up.

I'm going to attach the save game just before the issue, and after.

I kept playing so the log file is really outdated: this happened at the beginning, the log is after meeting Aloth and with The Defiant repaired.

 

Xopugno_save.zip

txt.zip

Edited May 10, 20187 yr by mammasaura

Hi mammasaura,

 

Thank you for your post. We are aware of the issue affecting Eder in the same way, but we will add your results to our investigation and continue working towards a resolution as soon as possible.
 

https://forums.obsidian.net/topic/97514-duplicated-eder/

 

Thanks!

 

-Jon