The macros names aren't showing up on the Ableton device rack.
It's a pain when I want to quickly check and edit macros.
I had the same issue in later versions of Serum 1 which I posted about a several months ago.
I stopped pursuing a fix with hints of Serum 2 on its way, hoping it would be fixed.
Other Plugins and Synths macro names work fine, seems to only be a Serum issue.
Versions:
Live 12.1.11
Serum 2.0.18