The lcH-slenderness conjecture for Artin groups

A discrete group $G$ is $lcH$-slender if every group homomorphism from a locally compact Hausdorff group into $G$ is continuous. The lcH-slenderness conjecture. All Artin groups are $lcH$-slender. This is known for right-angled Artin groups, Artin groups of spherical type, and more generally Artin groups of FC-type, but remains open in general.