I have found what seems to be a similar, if not the same issue, reported by LaughingLeader about 4 years ago: https://forums.larian.com/ubbthreads.php?ubb=showflat&Number=641347, however I'm not certain if I understand the workaround, or whether a better solution has been found since.

Essentially, on several occasions I have created a new SkillData, StatusData, and Stats entry for a skill, and added DisplayName entries for the SkillData and StatusData tables. However when the effect is applied to a target, the name of the Stats entry will be displayed on the target's buff bar instead of the associated DisplayName entry.

For example:
A 'Target' SkillData entry with name RX_Spider_ConsumeCorpse and DisplayName |Feast| has the the SkillProperties value 'EXPLODE,100,1;SELF:CONSUME_CORPSE,100,1;SELF:RX_SPIDER_DEVOURBUFF,100,3'
RX_SPIDER_DEVOURBUFF has the display name |Feasted| and StatsId value 'Stats_RX_Spider_DevourBuff'
Stats_RX_Spider_DevourBuff is defined in Stats in the Potion table.

Linked is an Imgur album with some screenshots.


I'm not sure if I'm missing something or if this is a known thing, but a friend of mine and I keep running into this. Anyone have any ideas?