This is the second stable version of the datapack that works with the recent 1.18 changes. Check the readme for more info.
In this version barrier particles are replaced by structure void particles as you can't find them in the normal gameplay.
VisibleMarkersEN-v1.1.zip : English version of the datapack
VisibleMarkersDE-v1.1.zip : German translation of the datapack
Full Changelog: https://github.com/Ceddix/VisibleMarkers/commits/v1.1