QuickfixsignsSelect removes all signs though only one class is given

[Jeansen]

When I use :QuickfixsignsSelect loc to clear all signs for locations marked by vim-grepper, I would expect that only the signs set for QFS_LOC_* would disappear. But instead all signs disappear.

[blueyed]

Have you tried :debug QuickfixsignsSelect loc to see what is going on?