I wan't to change build name when job ends, but apparently that option isnt working.
In my scenario build version is generated to txt file during job execution, that's why it needs to be done when job is finished. When I configure plugin to read version from txt file when job ends, I have such job name: *ERROR: ​File ​'version.txt' ​does ​not ​exist*. If I set any other version name (not from file) I see that build name is set immiedetaly after job starts.

Configuration:
Option Set Build Name checked.
Build name field set to any value
Option Set build name before build starts unchecked
Option Set build name after build ends checked

Efect:
Build name is changed immiedetaly after job starts.

Jenkins version: 2.32.2
build-name-setter plugin version: 1.6.5