[rules-users] Guvnor 5.2 CR1 : problem with collect in guided editor

Hi all We gave a try with the CR1 version, and see that all "collect" clauses appears in grey and are not editable (such conditions are also not deletable). Everything was OK with the M2 version (rules were edited with this version). It is quite strange because all the "collect" condition is greyed, just like a disabled field, and seems to be done by purpose. Is "collect" deprecated ? Does anyone has the problem ?