cubicweb-bootstrap #3702256 middle column sometimes move below others [deprecated]

See e.g. http://demo.cubicweb.org/CG33CKAN/view?rql=Any%20X%20WHERE%20X%20is%20Dataset and try to use the facets.

prioritynormal
typebug
done in<not specified>
load0.000
load left0.000
closed by<not specified>