Using projpred in multi-response models with group correlated hierarchical effects #495

In multivariate models such as:

brm(mvbind(y1, y2, y3) ~ x1 + x2 + (1 |id| grp), data = data, family = family())

Projpred crashes with the error: Unexpected number of | characters in group terms. Please notify the package maintainer.

Running it without the <id> works currently.

What would you advise ?